The Following Table Shows the Marginal Benefit to a Consumer

The following table shows the marginal benefit to a consumer of DVD rentals. $$\begin{array} { c c } \text { DVD rentals per month } & \text { Marginal Benefit (in dollars) } \\1 & \$ 8.50 \\2 & \$ 7.50 \\3 & \$ 6.50 \\4 & \$ 5.50 \\5 & \$ 4.50 \\6 & \$ 3.50 \\7 & \$ 2.50 \\8 & \$ 1.50\end{array}$$ If the price of a DVD rental is $4, a consumer following the rule of rational choice will rent:

A) 2 DVDs per month.
B) 3 DVDs per month.
C) 4 DVDs per month.
D) 5 DVDs per month.
E) 6 DVDs per month.