Consider the following cash flows: Year Cash Flow -$28,500 0123 15,200 13,700 10,100 a. What is the profitability index for the cash flows if the relevant discount rat percent? (Do not round intermediate calculations and round your answe decimal places, e.g., 32.161.) b. What is the profitability index if the discount rate is 15 percent? (Do not round intermediate calculations and round your answer to 3 decimal places, e.g., c. What is the profitability index if the discount rate is 22 percent? (Do not round intermediate calculations and round your answer to 3 decimal places, e.g., a. Profitability index b. Profitability index C. Profitability index