An investment project has annual cash inflows of $3,300.00 for the next four years, respectively. The discount rate is 15 percent a. What is the discounted payback period for these cash low $6,000? (Do not round intermediate calculations and decimal places, e..., 3216.) b. What is the discounted payback period for these cash flows ifi $8,100? (Do not round intermediate calculations and round your decimal places, e..., 32.16.) C. What is the discounted payback period for these cash flows if the initial costs $11,100? (Do not round intermediate calculations and round your 2 decimal places, e.g., 3216.) years years a. years Discounted payback period b. Discounted payback period Discounted payback period