The correct answer is: A. (1 + Inflation Rate) (1 + Real Rate) – 1
The money discount rate is the rate at which future money is discounted to reflect its present value. It is equal to the product of the inflation rate and the real interest rate.
The inflation rate is the rate at which prices for goods and services are rising. The real interest rate is the interest rate that is adjusted for inflation.
The money discount rate is used to calculate the present value of future cash flows. It is also used to calculate the future value of current cash flows.
Option B is incorrect because it does not include the real interest rate. Option C is incorrect because it does not include the inflation rate. Option D is incorrect because it does not include the product of the inflation rate and the real interest rate.