Assume That Canadian Firms Can Produce One Automobile or 1,000

Assume that Canadian firms can produce one automobile or 1,000 calculators per day,and that U.S.firms can produce three automobiles or 6,000 calculators per day.The terms of trade should be between

A) 1,000 and 2,000 calculators per automobile,and the U.S.should produce both calculators and automobiles
B) 1,000 and 6,000 calculators per automobile,and the U.S.should produce automobiles
C) 1,000 and 6,000 calculators per automobile,and the U.S.should produce calculators
D) 1,000 and 2,000 calculators per automobile,and the U.S.should produce automobiles
E) 1,000 and 2,000 calculators per automobile,and Canada should produce automobiles