问题
单项选择题
Which of the following is least likely to be considered a reason why regulation of monopolies is not effective（）
A. Regulators do not know the firm’s cost structure.
B. Regulation shifts industry demand and increases prices.
C. Regulation reduces the incentive for firms to reduce costs.
答案
参考答案：B
解析：
Regulation is not associated with a shift in industry demand.