When the perfectly competitive firm and industry are in long run equilibrium, then
A. P = MR = SAC = LAC
B. D = MR = SMC = LMC
C. P = MR = Lowest point on the LAC curve
D. All of the above
Answer: Option D
Solution (By Examveda Team)
When the perfectly competitive firm and industry are in long run equilibrium, then P = MR = SAC = LAC,D = MR = SMC = LMC and,
P = MR = Lowest point on the LAC curve.

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