If the equilibrium quantity of a good is also the socially optimal quantity, then:
A)total economic surplus has been maximized.
B)the marginal benefit to consumers of another unit of the good is zero.
C)the marginal cost to producers of another unit of the good is zero.
D)it's possible to make at least one person better off without hurting anyone else.

Question

Quizplus · Accepted Answer

The socially optimal quantity is the quantity of a good that results in the maximum possible economic surplus from producing and consuming the good.

If the Equilibrium Quantity of a Good Is Also the Socially