Comparison of returns. WG Investors is looking at three different investment opportunities. Investment one is a five-year investment with a cost of $100 and a promised payout of $200 at maturity. Investment two is a seven-year investment with a cost of $100 and a promised payout of $260. Investment three is a ten-year investment with a cost of $100 and a promised payout of $490. WG Investors can take on only one of the three select the best investment choice. What is the effective annual return for investment one, a five-year investment with a cost of $100 and a promised payout of $200 at maturity? \% (Round to two decimal places.)