An investment project costs $17,500 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? b. What is the discounted payback period if the discount rate is 4 percent? 3 b. What is the discounted payback period if the discount rate is 4 percent? c. What is the discounted payback period if the discount rate is 19 percent