基礎econ-u03-d02
A per-unit tax imposed on sellers of a good typically:
A. Raises sellers' costs, shifting supply left or up by the amount of the tax✓ 答案
B. Shifts the demand curve right by the amount of the tax
C. Removes the deadweight loss in every case
D. Leaves the equilibrium price unchanged
解說
A per-unit tax raises the cost of supplying each unit, so supply shifts up by the tax. The wedge between the price buyers pay and sellers receive equals the tax, and some mutually beneficial trades are lost.