(Table: Price and Output Data) Use Table: Price and Output

(Table: Price and Output Data) Use Table: Price and Output Data. The value of year 4's output in nominal dollars is: $$\begin{array} { | l | l | l | } \hline \text { Year } & \text { Output } & \text { Price per Unit } \\\hline 1 & 2 & \$ 2 \\\hline 2 & 3 & 4 \\\hline 3 = \text { base period } & 4 & 5 \\\hline 4 & 6 & 6 \\\hline 5 & 7 & 9 \\\hline\end{array}$$

A) $6.
B) $6
C) $24.
D) $24
E) $30
F) $30.
G) $36
H) $36.