5. Dorati Inc. is considering two mutually exclusive projects. Dorati used a 15% required rate of return to evaluate capital expenditure projects. If the two projects have the costs and cash flows shown below, and Year Project S 0 -$70,000 Project T. -$100,000 1 $50,000 $ 60,000 2 $60,000 $ 70,000 3 $ 80,000 $ 90,000 a) Using a replacement chain determine the NPV for each project (4 points) b) Determine what is the best project. Explain (4 points)