Final answer:
The real interest rate is D) 12%.
Step-by-step explanation:
The real interest rate is calculated by subtracting the inflation rate from the nominal interest rate. In this case, the nominal interest rate is 2% and the expected inflation rate is -10%. To find the real interest rate, we subtract -10% from 2%:
Real Interest Rate = Nominal Interest Rate - Inflation Rate
Real Interest Rate = 2% - (-10%)
Real Interest Rate = 2% + 10%
Real Interest Rate = 12%
Therefore, the real rate of interest is 12%, which means that after accounting for inflation, the interest rate is 12%.