13. Consider a monetary rule where the difference between the real interest rate, R, and the marginal product of capital, , is related to the inflation gap by parameter = 1/2. Initially the difference between the real interest rate and the return on capital rate is zero, = 2 and inflation is at target. If actual inflation rises by 2%, according to the rule the central bank should: a) lower the real interest rate to 2% b) raise the real interest rate to 3% c) target the marginal product of capital d) increase the money supply e) raise the real interest rate to 1% 13. Consider a monetary rule where the difference between the real interest rate, R, and the marginal product of capital, , is related to the inflation gap by parameter = 1/2. Initially the difference between the real interest rate and the return on capital rate is zero, = 2 and inflation is at target. If actual inflation rises by 2%, according to the rule the central bank should: a) lower the real interest rate to 2% b) raise the real interest rate to 3% c) target the marginal product of capital d) increase the money supply e) raise the real interest rate to 1%