【单选题】The nationally optimal tariff is the tariff for which:
A.
the production effect is equal to the consumption effect of the tariff.
B.
the government collects the highest tariff revenue.
C.
the difference between the government tariff revenue and the sum of consumption and production effect is the highest.
D.
the difference between the part of the tariff paid by the exporters and the welfare loss associated with the consumption and production effects is the highest.
【简答题】The tariff rates for importers fall into two categories: general tariff rates and minimum tariff rates.The general tariff rates apply to the imports originating in the countries with which the People'...