Assume a $90,000 investment and the following cash flows for two alternatives. Year101 InvestmentXmminvestment Yl $50,000 30,000 20,000 $25,000 25,000 20,000 25,000 a. Calculate the payback for investment X and Y. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Investment X Investment Y b. Which alternative would you select under the payback method? Investment X Investment Y