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【单选题】
Pizza and beer are complementary goods for consumers in a local market. The beer industry, which has constant marginal cost, is perfectly competitive and is now in long run equilibrium. If the market price of pizza permanently decreases, which of the following statements is correct about the beer market in the short run?A.
The market price of beer falls and each firm produces less beer.
B.
The market price of beer does not change, but the quantity increases because new firms enter the beer industry.
C.
The market price of beer does not change, but the quantity decreases because some firms exit the industry
D.
The market price of beer rises and each firm produces more beer
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