Since imports from other countries are subject to the same tarif

Since imports from other countries are subject to the same tariff no matter which member they export to，it is impossible for non-members to get into the market of ______ in a detour as they possibly do in the case of trade with a free trade area.
A、the free trade area
B、the Customs Union
C、the common market
D、the commodity cartel
【正确答案】：B
【题目解析】：Since imports from other countries are subject to the same tariff no matter which member they export to，it is impossible for non-members to get into the market of the customs union in a detour as they possibly do in the case of trade with a free trade area.参见教材P36。