You are considering a safe investment opportunity that requires a $1320 investment today, and will pay $540 two years from now and another $920 five years from now.

a. What is the IRR of this investment?

b. If you are choosing between this investment and putting your money in a safe bank account that pays an EAR of 5% per year for any horizon, can you make the decision by simply comparing this EAR with the IRR of the investment? Explain.