Country X has a hard-peg exchange rate system. and has recently has experienced a rise in it's real exchange rate. Which of the following statements is(are} true: D a. The central bank must devalue the the rate to maintain the Balance at Payment. D b. The rise in real exchange rate will be offset by a depreciation through external balancing mechanism. D c. No adjustment can be made to the exchange rate in a hard-peg system D d. Adjustment will be borne by the real economy