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Assuming a horizontal long?run market supply? curve, which of the following statements is? (are) TRUE about...

Assuming a horizontal long?run market supply? curve, which of the following statements is? (are) TRUE about competitive firms in the long? run?

A. p? = MC

B. profit? = 0

C. p? = AC

D. All of the above.

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Answer #1

Answer

Option D

all of the above

the perfectly competitive firm produces at MC=P and the price in long run is equal to the AC=P, also the profit is zero in long run because of the free entry and exit.

Profit=(P-ATC)*Q

P=ATC so the profit is zero.

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