Comparison of returns. WG Investors is looking at three different investment opportunities. Investment one is a five-year investment with a cost of $ and a promised payout of $ at maturity. Investment two is a seven-year investment with a cost of $ and a promised payout of $. Investment three is a ten-year investment with a cost of $ and a promised payout of $. WG Investors can take on only one of the three investments. Assuming that all three investment opportunities have the same level of risk, calculate the effective annual return for each investment, and select the best investment choice.