Refer to the Following Table That Gives the Demand Facing $$\begin{array} { c c } \text { Price } & \text { Quartity } \\\hline \$ 20 & 20 \\15 & 40 \\10 & 55 \\5 & 70\end{array}$$

Multiple Choice

Refer to the following table that gives the demand facing a monopolist:
$$\begin{array} { c c } \text { Price } & \text { Quartity } \\\hline \$ 20 & 20 \\15 & 40 \\10 & 55 \\5 & 70\end{array}$$
-If a firm earns profits of $250 by producing 40 units of output, the firm charges a price of _____ and has total costs of ______.

A) $15, $250
B) $15, $350
C) $20, $150
D) $600, $450
E) none of the above