In the United States from 1935 to 2011 the share of total income earned by the bottom fifth of income earners rose and then fell

With everything else the same, which of the following would increase the demand for U.S. dollars in the foreign exchange market?

I. a rise in the U.S. interest rate II. a fall in interest rates in foreign countries III. a rise in the expected future exchange rate A) I only B) I and II only C) I and III only D) I, II, and III

Which of the following are endogenous variables within the classical model?

a. output b. technology c. quantity of money d. level of capital e. a, b, and d