中等ECON-MINT-014
A corrective per-unit tax on the polluting factory is intended to:
A. Shift supply so the external cost is counted✓ 答案
B. Shift demand to the right
C. Set a maximum legal price
D. Turn the output into a free good
解說
The tax raises the private cost toward social cost and shifts supply left. It is not a demand shift, a price ceiling, or a claim that the good is free.