Carbon resistor is difficult to make of having a value less than about $20 $Ohms because they have ability to withstand high energy pulses, when current flow through the carbon composition body conducts the energy . So carbon resistor can be made with a higher resistance 

Components and wires are coded with colors to identify their value and function. The colors brown, red, green, blue, and violet are used as tolerance codes on 5-band resistors only.

Numbers attached for brown, black, green and silver are $1, 0, 5, \pm10\%$. Therefore the resistance of given resistor
$= 10 \times 10^5\  \Omega  \pm 10\%$.

In wired resistors are mainly produced with alloys, since pure metal has a high temperature co-efficient.

According to the color code of resistance,

Red color band in the color coding of a resistor has the tolerance of $\pm2\%$

Since first and second color bands has higher multiplier, they represents the most significant digits of the resistance value in finding the  resistance of carbon resistor.

A 5-bandcolor resistor is represented as

Tolerance level of

${1^{st}}Band:Brown - 1$

color coding gives a range in which value of resister lies.

The electric power line enters our house through three wires- namely the live wire, the neutral wire and the earth wire. To avoid confusion we follow a colour code for insulating these wires. The red wire is the live wire, and the black wire is neutral. The earth wire is given green plastic insulation.
The colour coding of wires is green for earth red for live and black for neutral.

According to international color coding system in Old colors red is live ( or phase) black is neutral, green/ yellow is earth 
and in New colors brown is live, blue is neutral and green/ yellow is earth.

Answer is C.

Carbon-composition and carbon film resistors are too small to have the resistance value printed on their housings. Therefore, bands of color are used to represent the resistance value.
The first and second band represents the numerical value of the resistor, and the color of the third band specify the power-of-ten multiplier. The color bands are always read from left to right starting with the side that has a band closer to the edge.
Hence, for a brown, black, brown color code of a resistor. The resistance value is 100 ohms, that is, $0.1k\Omega $.

Code of orange$=3$

The tolerance of silver colour is $10\%$.

The 3rd band indicates the multiplier telling the power of ten to which the two significant digits in color coding of the resistor must be multiplied.

$A\rightarrow$ Resistance value of carbon resistor with change in temperature it has negative thermal coefficient.

For first two significant digits of resistance ,  we see the first two colours .

The first two colours are brown and black.

Significant figure of red band is $2$ and for green is $5$
 so new resistance $500 \Omega$

Advantages of carbon resistors are:

The Color Coding of the resistances is given by:

The first two colours are blue and green.

According to colour code of carbon resistors, red stands for $2$, yellow for $4$, blue for $6$ and silver stands for $5$%.
First and second band represents the first two significant figure of resistance.
Third band represents the power raised to $10$ in the value of resistance.
Fourth band represents the tolerance.
Thus resistance of given carbon resistor is  $24\times 10^{6} \ \Omega$
Tolerance in the resistance is $10%$.
Thus resistance is  $24\times 10^6 \Omega  \ \pm 10$%

Resistor Band Colors

As shown above, a carbon-composition resistor can have 4 to 6 bands. A 5-band resistor is more precise compared to a 4-band type because of the inclusion of a third significant digit. A 6-band resistor is like a 5-band resistor but includes a temperature coefficient band (the 6th band). 

Each color represents a number if it's located from the 1st to 2nd band for a 4-band type or 1st to 3rd band for a 5-band and 6-band type. 

Mnemonics were created to easily memorize the sequence of the colors. The most popular mnemonic is "Big Boys Race Our Young Girls But Violet Generally Wins" where the first letter of each word corresponds to the first letter of the color. 

If the color is found on the 3rd band for a 4-band type or the 4th band for a 5-band and 6-band type, then it's a multiplier.

Notice that the number of zeroes is equal to the color's number as per the previous table.

The fourth band (or 5th for the 5-band and 6-band) indicates the tolerance values. Here, two colors are added (gold and silver).

The 6th band for a 6-band type resistor is the temperature coefficient. This indicates how much the actual resistance value of the resistor changes when the temperature changes.

Five band resistors with a fourth band of silver or gold form an exception, and are utilized on specific or older resistors. The first two bands represent the significant digits, the third band is a multiplication factor, the fourth band is for tolerance and the fifth band is for the temperature coefficient (ppm/K).

According to the colour code, brown colour stands for $1$, black for $0$ and red for  $2$.
First and second band represents the first and second significant number respectively.
So, it is  $10\Omega$.
Third band represents power of $10$ by which it is raised, so it is  $10^1$.
Last band represents the tolerance of resistor, so it is  $2$%.
Thus value of resistance,   $R = (10\times 10^1)\Omega \pm 2$% $ = 100\Omega \pm 2$%