An Upward-Sloping Marginal Cost Curve for Pollution Abatement Means That

An upward-sloping marginal cost curve for pollution abatement means that

A) it is impossible to know the benefits from additional increments of pollution reduction.
B) additional increments of pollution abatement will yield decreasing benefits.
C) society views additional increments of pollution reduction as absolutely necessary.
D) the cost of an extra unit of pollution abatement will increase as the total amount of abatement rises.
E) the marginal benefit of pollution reduction will increase with additional increments of pollution reduction.