The Following Table Shows the Units of Calculators and Rice

The following table shows the units of calculators and rice produced by a laborer in a day in Japan and Korea.Table 20.3

-The terms of trade is defined as:

A) the quantity of inputs sacrificed to produce each unit of a good.
B) the quantity of one good that is exchanged for a quantity of another good.
C) the ratio of the total cost of production of individual traders.
D) the marginal cost of producing one good as a percentage of the marginal cost of another good.
E) the ratio of total exports of a nation to its total production.