A Per-Unit Excise Tax on a Single Competitive Firm Causes

Multiple Choice

A per-unit excise tax on a single competitive firm causes:

A) all cost curves,except the total fixed cost curve to increase by the amount of the tax.
B) all per-unit cost curves to increase by less than the amount of the tax.
C) all per-unit cost curves,except the marginal cost curve,to decrease by the amount of the tax.
D) all per-unit cost curves and the marginal cost curve to increase by the amount of the tax.