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单选题 In the context of the long-run equilibrium in a competitive industry, what does it mean when the demand curve (AR) is tangential to the firm's long-run average cost curve? ( )
A. The firm is experiencing supernormal profits
B. The firm is operating at a loss
C. The firm is earning normal profits
D. The firm is maximizing its production output
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时间:2023-12-30 14:43:14
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