b} Now suppose that this economy suffers an exogenous 11m in exports and thus in its current account balance. Specically, the value of CA decreases by 3 units at given values of the real exchange rate [E-P'TP} and aggregate disposable income [Y T]. The new current account function is thus: EA = 2 + lE-P'i'j HEWT] Assume that there are no changes in fiscal policy, no change in the ofcial value of the exchange rate (EB), and no change in any oier exogenous variable. In the LIDAA diagram above which curve{s) will shift, and in which direction{s), as the economy adjusts to its new equilibrium following iis exogenous decrease in the current account balance. (2 marks} c} As the economy adjusts to this exogenous fall in the current account balance, its central bank will be forced to intervene in the foreign exchange (EX) market to maintain the exchange rate xed at E". Explain the sequence of events which makes rat intervention necessary, descrihe the specific act of intervention which the central bank must undertake, and identify the impact of that action on the money supply of the economy. [8 marks)