X Has a Comparative Advantage Over Y in Producing a Good

X has a comparative advantage over Y in producing a good if

A) X can produce more of the good than Y can in a given time period.
B) X has to trade off more than Y does to produce the good.
C) X has a lower opportunity cost of producing the good than does Y.
D) X has a higher opportunity cost of producing the good than does Y.
E) Y can produce more of the good than X can in a given time period.