Sergei Makes Millions of Dollars a Year Playing Hockey

Sergei makes millions of dollars a year playing hockey.Sergei is also the best tailor in his hometown in Russia.Why doesn't Sergei make his own clothes?

A) He has already made all the clothes he will need for a few years.
B) The opportunity cost to him of making his own clothes is very high because it takes away from his lucrative hockey career.
C) Sergei just can't find the material he likes in the United States.
D) Sergei has a comparative advantage in tailoring clothes.
E) The opportunity cost of making clothes instead of playing hockey is relatively low, so he should instead concentrate on his hockey career (for which the opportunity cost is very high) .