Table 92 $\begin{array}{ll}\text { Price }(\$) & \text { Quantity Demanded } \\\hline 50 & 2 \\40 & 3 \\30 & 4 \\20 & 5 \\10 & 6\end{array}$

Multiple Choice

Table 9.2
$\begin{array}{ll}\text { Price }(\$) & \text { Quantity Demanded } \\\hline 50 & 2 \\40 & 3 \\30 & 4 \\20 & 5 \\10 & 6\end{array}$
-Refer to Table 9.2.Marginal revenue from the third unit of output is _____

A) $20.
B) $120.
C) $100.
D) $40.
E) $0.