27. Which of the following is correct for a monopolistically competitive firm in long-run equilibrium? a. MC = ATC. b. MC exceeds MR. c. P exceeds minimum ATC. d. P = MC.

27. Which of the following is correct for a monopolistically competitive firm in long-run equilibrium?
a. MC = ATC.
b. MC exceeds MR.
c. P exceeds minimum ATC.
d. P = MC.

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