单选题

The diagram to the right shows the domestic demand and supply curves for a country that imports a commodity, where P_W is its world price and PT is its domestic price after the imposition of a tariff. The reduction in the net national welfare of this country as a result of the tariff is best described by the area(s):

A、 E.
B、 G.
C、 F+H.

【正确答案】 C

【答案解析】

C is correct. The loss in consumer surplus because of higher prices is represented by area E+F+G+H. This exceeds the gains from producer surplus (E) and government revenues on imports (G). Hence, the net welfare effect to the country is a deadweight loss of [E + F + G + H] –[E] – [G] = F+H.