5. (15 Points) Proposals M and N each cost S600,000, have 6-year lives, and have expected total cash flows of $750,000. Proposal M is expected to provide equal annual net cash flows of S125,000, while the net cash flows for Proposal N are as follows Year 1 $250,000 Year 2 S200,000 Year 3 S150,000 Year 4 $ 75,000 Year 5 S 50,000 Year 6 S 25,000 Determine the cash payback period for each proposal