本题目来源于试卷: IB Economics Unit 2.6: Microeconomics - Market Power，类别为 IB经济学
[单选题]
As firms gain market power, which of the following always decrease/h eui:56 gk vg6wnd8ds?g 6lver/dhf*zy86, tx h.7jwl
A. Product differentiation
B. Profit
C. Unit costs
D. Barriers to entry
参考答案: C
本题详细解析:
C Firms with market power tend to be larger, and larger firms benefit from economies of scale, which drive down unit costs. Choices B and D are wrong as larger firms with greater market power also earn higher profits and have higher barriers to entry. Choice A is wrong as there is no pattern for how the level of product differentiation varies. For example, monopolistically competitive firms engage in greater product differentiation compared to perfectly competitive firms. On the other hand, monopolies, being the sole suppliers in their markets, do not require product differentiation.
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