Table 101 -Refer to Table 10

Multiple Choice

Table 10.1
$$\begin{array} { c c c } \mathrm { Q } & \mathrm { P } ( \$ ) & \mathrm { TC } ( \$ ) \\\hline 1 & 27 & 10 \\2 & 24 & 17 \\3 & 21 & 32 \\4 & 18 & 47 \\5 & 15 & 67\end{array}$$
-Refer to Table 10.1,which shows the output,price,and total cost for a monopolistic competitor.The profit-maximizing price for the firm is _____

A) $0.
B) $27.
C) $21.
D) $15.
E) $18.