Answer:
B. The investor who purchased the bond without inflation protection.
Step-by-step explanation:
According to fisher, is necessary to calculate the real interest rate of both options for a comparision. The formula is defined as follows:
Real interest rate = nominal rate - inflation
Investor A
1.5% annual rate of interest
There is no inflation to be calculated because the bond is inflation-protected.
Real interest rate = 1.5% - 0 = 1.5%
Investor B
4.2% annual rate of interest
2% average inflation
Real interest rate = 4.2% - 2% = 2.2%
In conclusion, the investor without inflation protection earns a higher real return