$$\begin{array} { c r } \text { Output } & \text { Price } \\1 & \$ 30 \\2 & 28 \\3 & 26 \\4 & 24 \\5 & 22\end{array}$$

Multiple Choice

$$\begin{array} { c r } \text { Output } & \text { Price } \\1 & \$ 30 \\2 & 28 \\3 & 26 \\4 & 24 \\5 & 22\end{array}$$
-The marginal revenue that would be derived from producing the fourth unit of output is

A) $24.
B) $22.
C) $20.
D) $18.
E) $16.