Use the Following to Answer Questions

Multiple Choice

Use the following to answer questions:
Figure: Comparing Long-Run Equilibriums
-(Figure: Comparing Long-Run Equilibriums) In the figure Comparing Long-Run Equilibriums, which of the following statements is TRUE?

A) Firms in the market structure shown in panel (a) cannot have excess profits in the long run, but those in panel (b) can.
B) Both panels show markets that have few interdependent firms.
C) Both panels show markets that produce identical products.
D) Both panels show markets that have many firms.