An investment project has annual cash inflows of $4,500,$5,600,$6,400 for the next four years, respectively, and $7,700, and a discount rate of 12 percent. What is the discounted payback period for these cash flows if the initial cost is $7,500 ? (Do not rounid your intermediate calculations.) Mutuple Choice 178 years 1.28 years 078 years 3.56 years 2.53 years What is the payback period for the following set of cash fiows? Multiple Choice 378 years. 3.60 years 3.55 years 3.62 years 3.90 years