问题
单项选择题
Which of the following regarding monopolistic competition is TRUE（）
A. Zero barriers to entry and exit exist.
B. The demand curve for an individual firm is a straight horizontal line.
C. Each firm produces a differentiated product.
答案
参考答案：C
解析：
Other characteristics of monopolistic competition (also known as competitive price searcher markets) are: a large number of independent sellers, low barriers to entry, and an elastic downward sloping demand curve.