A decrease in production costs for firms in a perfectly competitive market will cause a(n):
A.permanent increase in the price.
B.economic profit for firms in the short run.
C.increase in demand.
D.increase in firms' marginal revenue.

Question

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The Answer of A decrease in production costs for firms in a perfectly competitive market will cause a(n):
A.permanent increase in the price.
B.economic profit for firms in the short run.
C.increase in demand.
D.increase in firms' marginal revenue.

A Decrease in Production Costs for Firms in a Perfectly