Refer to the Above Graph for a Representative Firm in Monopolistic

Refer to the above graph for a representative firm in monopolistic competition in a constant-cost industry. This firm is

A) in short-run equilibrium, but not long-run equilibrium.
B) in long-run equilibrium, but not short-run equilibrium.
C) in both short-run and long-run equilibrium.
D) not in either short-run or long-run equilibrium.