3. answer the following questions using the cash flows for mutually exclusive Project A and Project B:

Year: 0 1 2 3 4 5 6

Project A CF ($): (18,000)4,500 6,500 6,500 6,500 5,500 4,500

Project B CF ($): (9,000) 3,000 7,000 6,000 0 0 0

a. Compute the net present value for both projects using a 15% discount rate.