Table 10-1 A Monopoly Producer of Foreign Language Translation Software Faces a Unit

Table 10-1
$\begin{array}{|c|c|c|}\hline \begin{array}{c}\text { Price per } \\\text { Unit }\end{array} & \begin{array}{c}\text { Quantity Demanded } \\\text { (units) }\end{array} & \begin{array}{c}\text { Total Cost of Production } \\\text { (dollars) }\end{array} \\\hline \$ 85 & 10 & \$ 530 \\\hline 80 & 11 & 540 \\\hline 75 & 12 & 550 \\\hline 70 & 13 & 560 \\\hline 65 & 14 & 575 \\\hline 60 & 15 & 595 \\\hline 55 & 16 & 625 \\\hline\end{array}$ A monopoly producer of foreign language translation software faces a demand and cost structure as given in Table 10-1
-Refer to Table 10-1.What is the marginal revenue from the sale of the 12th unit?

A) $75
B) $50
C) $20
D) -$5