Supposed that, initially, the U.S. economy was in an aggregate demand-aggregate supply equilibrium at point A along the aggregate demand curve AD in the diagram in the next column. Now, however, the value of the U.S. dollar has suddenly appreciated relative to foreign currencies. This appreciation happens to have no measuralbe effects on either the short-run or the long-run aggregate supply curve in the United States. It does, however, influence U.S. aggregate demand.

a. Explain how the dollar apprciation will affect U.S.net export expenditures.

b. Of the alternative aggregate demand curvess depicted in the figure-AD1 versus AD2 which could represent the aggregate demand effect of the U.S. dollar's appreciation? What effects does the appreciation have on real GDP and the price level?

c. What policy action might the Federal Reserve take to prevent the dollar's appreciation from affecting equilibrium real GDP in the short run?