Which of the Following Represents an Efficient Quantity of a Public

Multiple Choice

Which of the following represents an efficient quantity of a public good?

A) the quantity at which the marginal cost of production is minimized
B) the quantity at which the number of free riders is maximized
C) the quantity at which the marginal benefit minus marginal cost is minimized
D) the quantity at which the marginal benefit is equal to the marginal cost
E) the quantity at which the marginal benefit exceeds the marginal cost by the maximum amount possible