If the Fed wants to lower the interest rate, it will

To appreciate the U.S. dollar against the Mexican peso, in the foreign exchange market the Fed could ________ dollars and ________ pesos

A) buy; buy B) sell; sell C) sell; buy D) buy; sell E) None of the above answers is correct because the Fed cannot affect the U.S. exchange rate.

Marginal cost is ____________

a. The revenue from selling an additional unit of output b. none of the above c. The total cost of production d. The cost of producing an additional unit of output