Iable. Number or nours requirea to produce a unit of X ana Y. Table. Number of hours required to produce a unit of X and Y. N Required hours per Required hours per Country unit of output, unit of output, Product X Product Y 6 South Korea 80 40 Japan 20 20 8 9 Based on the principle of comparative advantage Japan should: 11 12 Export X 14 15 Export Y Export Y and X 17 18 None of the above; there is no basis for gainful trade