Final answer:
To calculate the rate of return for each project, divide the total net return by the initial investment and raise it to the power of 1 divided by the total life of the project, then subtract 1. Based on the calculations, Project A has a rate of return of 6.47% and Project B has a rate of return of 5.18%.
Step-by-step explanation:
To calculate the rate of return for each project, we need to use the formula:
Rate of Return = (Total Net Return / Initial Investment)^(1 / Total Life) - 1
For Project A:

Rate of Return ≈ 0.0647 or 6.47%
For Project B:

Rate of Return ≈ 0.0518 or 5.18%
Based on the calculated rates of return, Project A has a rate of return of 6.47% and Project B has a rate of return of 5.18%. Therefore, Option A) Project A has a rate of return of 6.47% and Project B has a rate of return of 5.18% is the correct answer.