To answer this question, you need to understand what coinage metals are. Coinage metals are a group of metals that are commonly used to make coins due to their desirable properties such as durability, malleability, and resistance to corrosion.

Let's go through each option to understand why it is correct or incorrect:

Option A) Silver and Gold - This option is incorrect because both silver and gold are considered coinage metals. They have been widely used throughout history to make coins.

Option B) Zinc and Gold - This option is correct because zinc is not considered a coinage metal. While gold is a coinage metal, zinc is not commonly used in the production of coins.

Option C) Copper and Silver - This option is incorrect because both copper and silver are considered coinage metals. Copper has been used in coin production for centuries, and silver is also widely used in the production of coins.

Option D) Copper and Gold - This option is incorrect because both copper and gold are considered coinage metals. Copper has been used in coin production for centuries, and gold is one of the most well-known and widely used coinage metals.

The correct answer is B. This option is correct because zinc is not considered a coinage metal.

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• Wrong explanation