P9-5 Calculating Discounted Payback (LO3] An investment project costs $13,800 and has annual cash flows of $3,700 for six years. a. What is the discounted payback period if the discount rate is zero percent? 3.73 3.80 3.66 4.08 3.38 b. What is the discounted payback period if the discount rate is 5 percent? 4.23 4.32 4.15 4.58 3.88 c. What is the discounted payback period if the discount rate is 21 percent? Never 1.02 3.98 3.35 4.35