Nicholson roofing materials, inc., is considering two mutually exclusive projects., each with an initial investment of $100,000. The company's board of directors has set a maximum 4-year payback requirement and has set its cost of capital at 12%. The cash inflows associated with the two projects are shown in the following table

Year	Project A	Project B
1	35000	75000
2	35000	60000
3	35000	10000
4	35000	10000
5	35000	10000
6	35000	10000

a. Calculate the payback period for each project. Rank the projects by payback period

b. Calculate the NPV of each project Rank the project by NPV

c. Calculate the NPV of each project. Rank the project by IRR

d. Make a recommendation