问题补充:
单项选择题:
An analyst does research about monopolistic competition. Which of the following statements is most accurate Long-run economic profit under monopolistic competition is zero because:
A. entry into and exit from the market are possible with fairly low costs.
B. each firm produces a differentiated product.
C. two or more firms have the incentive to collude.
答案:
答案:A
解析: 垄断竞争行业中长期的经济利润也为零,这是因为一旦有经济利润(超额利润)产生,由于进入门槛低,新的企业就会进入这个行业,使长期的经济利润为零。同样,如果一旦有经济亏损,由于退出门槛低,亏损的企业就会退出这个行业,使长期的经济利润仍然为零。
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