$$\begin{array} { c r } \text { Output } & \text { Price } \\1 & \$ 20 \\2 & 18 \\3 & 16 \\4 & 14 \\5 & 12\end{array}$$

Multiple Choice

$$\begin{array} { c r } \text { Output } & \text { Price } \\1 & \$ 20 \\2 & 18 \\3 & 16 \\4 & 14 \\5 & 12\end{array}$$
-The marginal revenue that would be derived from the production of the fifth unit is

A) $20.
B) $16.
C) $12.
D) $8.
E) $4.