Table 67 -Refer to Table 6

Table 6.7
$$\begin{array} { | c | c | } \hline \text { Frice per Fiece } ( \$ ) & \text { Quantity } \\\hline 8 & 0 \\\hline 7 & 1 \\\hline 6 & 2 \\\hline 5 & 3 \\\hline 4 & 4 \\\hline 3 & 5 \\\hline 2 & 6 \\\hline 1 & 7 \\\hline\end{array}$$
-Refer to Table 6.7,which shows Ethan's demand for sushi at various prices.When the price is $4,the dollar value of four pieces is $_____

A) 7.
B) 1.
C) 22.
D) 16.
E) 4.