Which one of the following about the multiplier model is most appropriate? Select one: O a. More than one of these statements are correct O b. In a recession, monetary policy is usually more responsive, and the central bank should keep the interest rate low to stimulate investment O c. In a recession, a government with a budget surplus should reduce expenditures to keep the balance sheet stable O d. Equilibrium consumption will be unaffected if the government expenditure increases O e. Fiscal policy has no effect on financial markets