Year 0 1 2 3 Cash Flow -$ 7,200 3,800 2,200 2,800 a. What is the profitability index for the cash flows if the relevant discount rate is 12 percent? Profitability index b. What is the profitability index for the cash flows if the relevant discount rate is 19 percent? Profitability index c. What is the profitability index for the cash flows if the relevant discount rate is 24 percent? Profitability index