Two Areas, Europe and America, Can Produce Only Goods a and B

Multiple Choice

Two areas, Europe and America, can produce only goods A and B, under constant costs as indicated below.What will be the result of free trade between the two areas (assuming no transportation costs) ?

A) Europe will export A and B to America.
B) Europe will import A and export B.
C) Europe will import B and export A.
D) Europe will import A and B from America.
E) No trade will take place.