According to the theory of the firm, which of the following statements describes an oligopoly?
A、There are no barriers to entry into or exit from the market
B、There is only one producer in the market
C、There are four producers exerting considerable influence in the market
D、There are many producers but they each use product differentiation to distinguish themselves from each other
A、There are no barriers to entry into or exit from the market
B、There is only one producer in the market
C、There are four producers exerting considerable influence in the market
D、There are many producers but they each use product differentiation to distinguish themselves from each other
【参考答案及解析】
Rationale: A is one of the conditions for a perfect market, B is a monopoly and D is monopolistic competition.
Rationale: A is one of the conditions for a perfect market, B is a monopoly and D is monopolistic competition.