Consider the following cash flows: Year Cash Flow -$28,600 15,100 13,800 10,200 a. What is the profitability index for the cash flows if the relevant discount rate is 11 percent? (Do not round intermediate calculations and round your answer to 3 decimal places, e.g., 32.161.) b. What is the profitability index if the discount rate is 16 percent? (Do not round intermediate calculations and round your answer to 3 decimal places, e.g., 32.161.) c. What is the profitability index if the discount rate is 23 percent? (Do not round intermediate calculations and round your answer to 3 decimal places, e.g., 32.161.) a. Profitability index b. Profitability index Profitability index