【单选题】Suppose the tax rate on interest income is 50 percent, the real interest rate is 3 percent, and the inflation rate is 4 percent. In this case, the real after-tax interest rate is
【单选题】Suppose the tax rate on interest income is 25 percent, the real interest rate is 4 percent, and the inflation rate is 4 percent. In this case, the real after-tax interest rate is
【判断题】Suppose the nominal interest rate is 10 percent; the tax rate on interest income is 28 percent, and the inflation rate is 6 percent. Then the after-tax real interest rate is -3.2 percent.