The Marginal Benefit of Reducing Pollution in Some Industry May

The marginal benefit of reducing pollution in some industry may be expected to

A) be always greater than the marginal cost of pollution reduction.
B) fall as the amount of pollution abatement undertaken rises.
C) rise as the level of pollution gets closer to zero.
D) remain constant for all levels of pollution control.
E) exceed the marginal cost of pollution reduction for all positive levels of pollution.