Eggs Are Sold in a Perfectly Competitive Market

Multiple Choice

Eggs are sold in a perfectly competitive market.No persons other than the buyers and sellers of eggs are affected in any way when eggs are traded in the market.It then follows that:

A) the price of eggs equals the marginal social cost of eggs.
B) the price of eggs equals the marginal social benefit of eggs.
C) the price of eggs exceeds the marginal social benefit of eggs.
D) both (a) and (b) are correct.