Correct Option: C

Dual pricing is the practice of setting prices at different levels depending on the currency used to make the purchase. It may be used to accomplish a variety of goals, such as to gain entry into a foreign market by offering unusually low prices to buyers using the foreign currency, or as a method of price discrimination. In the context of commerce, however, dual pricing refers to the sale of the same product at different prices, depending on the market. This is also known as two-tier pricing and is common in many developing nations