Suppose that the wage rate in country A is three times the wage rate in country B. In this situation, in the context of the Classical/Ricardo trade model, country A would be able to export goods to country B in industries where .a. A's workers were less than one-third as productive as B's workers.
b. A's workers were equally as productive as B's workers.
c. A's workers were less than three times as productive as B's workers.
d. B's workers were less than one-third as productive as A's workers.