The Following Question(s) Refer(s) to the Figure Below, Which Depicts

The following question(s) refer(s) to the figure below, which depicts the demand, marginal revenue, and cost curves facing a firm in a competitive price-searcher industry.
Figure 10-13

Refer to Figure 10-13. In the long run, we would expect the firm's

A) ATC curve to fall as firms enter the industry, forcing the firm to increase its efficiency.
B) demand curve to decrease as firms enter the industry due to the presence of positive economic profits.
C) demand curve to increase as firms exit the industry due to the presence of economic losses.
D) demand curve to shift such that marginal revenue and marginal cost intersect at quantity F--the point where average total cost is at a minimum.