Exhibit 10.4 -Exhibit 10.4 Shows the Demand,marginal Revenue,and Cost Curves for a Cost

Exhibit 10.4

-Exhibit 10.4 shows the demand,marginal revenue,and cost curves for a monopolistic competitor.At the profit-maximizing output level,the firm is _____

A) earning an economic profit of $760.
B) earning an economic profit of $950.
C) earning zero economic profit.
D) earning an economic profit of $990.
E) suffering a loss of $1,000.