Jane Produces Only Corn, Measured in Tons, and Cloth, Measured

Multiple Choice

Jane produces only corn, measured in tons, and cloth, measured in bolts. For her, the opportunity cost of one more ton of corn is

A) the ratio of all the bolts of cloth she produces to all the tons of corn she produces.
B) the ratio of all the tons of corn she produces to all the bolts of cloth she produces.
C) the inverse of the opportunity cost of one more bolt of cloth.
D) the same as the opportunity cost of one more bolt of cloth.