问题
单项选择题
Which one of the following structures is characterized by free entry and exit, a differentiated product, and price searcher behavior（）
A. Oligopoly.
B. Monopolistic competition.
C. Pure competition.
答案
参考答案：B
解析：
Monopolistic competition is another name for competitive price-searcher markets. There are a large number of independent sellers, each produces a differentiated product, each market has a low barrier to entry, and each producer faces a downward sloping demand curve.