For Society as a Whole, the Optimal Amount of Pollution

Multiple Choice

For society as a whole, the optimal amount of pollution control exists when:

A) ​the marginal cost of pollution reduction is equal to the marginal benefit of the pollution reduction.
B) ​firms are allowed to produce as much pollution as necessary to make the goods people want.
C) ​the marginal costs of pollution clean up exceed the benefits.
D) ​no pollution is permitted at all.