单选题
A country has a comparative advantage in producing a good if that country
A、
can produce the good at a lower absolute cost than any other country.
B、
can produce the good at a lower opportunity cost than any other country.
C、
can do a better job than any other country.
D、
spends less money in out-of-pocket expenses than any other country.
【正确答案】
B
【答案解析】
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