单选题

Which of the following statements about the characteristics of a monopoly and those of an oligopoly is least accurate?（）

A、 In an oligopoly, there are often substantial economies of scale.
B、 In both a monopoly and an oligopoly, there are high entry barriers into the market.
C、 In an oligopoly, the decisions of each seller are independent of the policies followed by competitors.

【正确答案】 C

【答案解析】

In an oligopolistic industry, the decisions of a firm often influence the demand, price and profit of rivals. Thus, the welfare of each seller is dependent on the policies follow by major rivals.