WG Investors is looking at three different investment opportunities. Investment one is a five-year investment with a cost of $680 and a promised payout of $1,360 at maturity. Investment two is a seven year investment with a cost of $680 and a promised payout of $2,108. Investment three is a ten-year investment with a cost of $680 and a promised payout of $3,332. 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.