PLEASE GIVE ME ANSWER AS SOON AS POSSIBLE

Combo Corporation is considering two mutually exclusive projects with a useful life of four years. The after-tax cash flows for projects W,X, and Y are listed below. Assuming the expected rate of return on the investment is estimated at 12%. Required to: a. calculate the payback period for each project. (6 Marks) b. calculate the net present value for each project. (9 Marks) c. based on the two investment techniques, which project should be accepted? (3 Marks) d. if Combo Corporation is considering the project(s) that can recover its initial investment within three years, which project(s) should be accepted? (2 Marks)