10 The following table shows the production of wheat (bushels per hour) and cloth (yards per hour) for Country A and Country B. In order for both countries to gain from trade, one bushel of wheat must trade for_____.
(A) between 1/2 and 2 yards of cloth
(B) between 6 and 18 yards of cloth
(C) between 1/2 and 3 yards of cloth
(D) between 1/3 and 3 yards of cloth
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