Scenario 15-1 A Monopoly Firm Maximizes Its Profit by Producing Q =

Scenario 15-1
A monopoly firm maximizes its profit by producing Q = 500 units of output. At that level of output, its marginal revenue is $40, its average revenue is $80, and its average total cost is $44.
-Refer to Scenario 15-1. At Q = 500, the firm's profit is

A) $18,000.
B) $20,000.
C) $22,000.
D) $40,000.