P9-1 Calculating Payback [LO2] What is the payback period for the following set of cash flows? Multiple Choice 241 years 253 years 243 years 236 years 271 years Activate Windows Go to Settings to activate Winds P9-15 Calculating Profitability Index [LO7] a. What is the profitability index for the cash flows if the relevant discount rate is 6 percent? b. What is the profitability index for the cash flows if the relevant discount rate is 17 percent? c. What is the profitability index for the cash flows if the relevant discount rate is 21 percent