Which of the following statements about real and nominal interest rates is correct?

		If the nominal interest rate is 3 percent and the inflation rate is 4 percent, then the real interest rate is 3.5 percent.
		When the inflation rate is positive, the real interest rate is equal to the nominal interest rate.
		The real interest rate will be positive only when the rate of inflation is less than 5%.
		The real interest rate will always be lower than the nominal interest rate.
		The nominal interest rate is the rate of growth in the lira value of a deposit or debt, the real interest rate is the rate of growth in the purchasing power of a deposit or debt. If you deposit 1000TL in the bank for one year at 8% nominal interest rate, and if during the year CPI increases by 17%, your deposit will increase to 1075TL but the purchasing power of that 1075TL will be about 10% lower than the purchasing power of 1000TL at the time when you put it in the bank.