4. Mulroney Corp. is considering two mutually exclusive projects. Both require an initial investment of $9,000 at t-0. Project X has an expected life of 2 years with after-tax cash inflows of $6,200 and $7,100 at the end of Years 1 and 2, respectively. In addition, Project X can be repeated at the end of Year 2 with no changes in its cash flows. Project Y has an expected life of 4 years with after-tax cash inflows of $4,600 at the end of each of the next 4 years. Each project has a WACC of 8%. Using the replacement chain approach, what is the NPV of the most profitable project? Do not round the intermediate calculations and round the final answer to the nearest whole number. a 5,113 b. 4,989 c. 5,425 d. 5,924 Page 1