问题详情

What is the professors opinion of retraining and relocating unemployed people？

A．It is more expensive over time than blocking imports.

B．It can sometimes have unintended consequences.

C．It is one possible way to adapt to an increase in imports.

D．It maintains the production levels of inefficient industries.

此题为多项选择题。请帮忙给出正确答案和分析，谢谢！