Ceteris paribus, a real depreciation of the dollar will decrease net exports in the United States

For an open economy, which of the following expressions represents saving (S)?

A) I + T - G + NX B) I + T - G - NX C) I + G - T + NX D) G - T + NX - I E) none of the above

Which of the following is in charge of U.S. aid to foreign countries?

a. International Monetary Fund (IMF) b. Agency for International Development (AID) c. New International Economic Order (NIEO) d. World Bank