It is the correct answer.

Both are water soluble vitamins. Hence, it is the correct answer.

Deficiency of vitamin B3 causes pellagra. Symptoms of pellagra include dermatitis, weakness, mental confusion and diarrhea. Pellagra may lead to dementia and death in some cases. Hence, it is the correct answer.

Coenzyme A is synthesised from vitamin B5.

Vitamin C is required in the highest amount. 90 mg is the prescribed amount for an average adult. People who don't get sufficient amount will suffer from scurvy. 

Deficiency of Vitamin B1 will cause Beri-Beri. Symptoms of Beri-Beri include weight loss, weakness and pain in the limbs. Edema (swelling of bodily tissues) is very common. Many patients can be treated by thiamine. It is the correct answer.

It is the correct answer as vitamin B2 is found mainly in dairy products, bananas, popcorn and green beans.

It is the correct answer as the other name of vitamin B12 is phylloquinone. It is a water-soluble vitamin and plays a main role in the normal functioning of the brain and nervous system, and in the formation of blood.

It is correct.

It is the correct combination as the scientific name of vitamin D is cholecalciferol and its deficiency will cause rickets.

Osteomalacia is a disease in adults that results from vitamin D deficiency. Characteristics of this disease are softening of bones, curving of legs, muscle weakness, bone fragility and increased risk for fractures. Hence, it is the correct answer.

Very few foods contain vitamin D. Synthesis of vitamin D takes place in the skin. Vitamin D produced from sunlight is biologically inactive. Its activation occurs in liver and kidney. Hence, it is the correct answer.

Vitamin B1 helps in the formation of Adenosine Triphosphate (ATP), which is required by every cell of the body. Hence, it is correct.

It is the correct option as all of the above mentioned statements about vitamin A are correct.

Symptoms of vitamin B3 high dosage are liver damage (doses > 2 g/day) and other problems such as skin flushing and itching, dry skin, and skin rashes. Hence, it is the correct answer.