问题详情

Which of the following is/are usually seen as forms of market failure where regulation may be a solution？ 1 Imperfect competition 2 Social costs or externalities 3 Imperfect information
A.1 only
B.1 and 2 only
C.2 and 3 only
D.1, 2 and 3请帮忙给出正确答案和分析，谢谢！