In the DD-AA model, suppose there is a sudden and arbitrary shift in exchange rate expectations: S^e simply rises. (a) Show the short-run effect on the equilibrium exchange rate and Output under a floating exchange rate regime. (b) Under a fixed exchange rate regime, this would be a currency crisis, show the short-run effect on the equilibrium exchange rate and Output. (c) How would the domestic interest rate i behave under both the floating exchange rate regime and the fixed exchange rate regime