单选题 In a perfectly competitive market, what determines the price of the product?

A、

A. The producers of the product.
B、

B. The government.
C、

C. Market supply and demand.

【正确答案】 C

【答案解析】Individual firms in perfect competition have no influence over market price. They are price takers who must sell at the prevailing market price. If they set their price higher than the market, they will sell nothing.