Suppose you are the economic advisor to the government of country ABC that has a current account surplus and is under increasingly inflationary pressures. This country has a fixed exchange rate regime. a) Can ABC attain both internal and external balances using only expenditure-changing policy? Use the related graphical tool and a verbal explanation. Also, make sure you explain the meanings of "expenditure-changing" and "expenditure-switching" policies in your answer. b) Given your answer to part a), what would be your advice on how the authorities should move the ABC’s exchange rate against USD ("Alora" is the currency of this economy)?