The Marginal Benefit of Reducing Pollution and the Marginal Cost

Multiple Choice

The marginal benefit of reducing pollution and the marginal cost of reducing pollution are given by the following equations: MB = -2 + 18,and MC = 2 + 2,where U is the number of units of pollution abatement.What is the net marginal benefit (MB - MC) of abating the first unit of pollution (U = 1) ?

A) 10
B) 12
C) 14
D) 16
E) 18