kindly provide detailed answer with manual calculations and not on excel. please make sure that it is a fresh answer and not copy pasted from already available answer on this site. kindly provide each step in detail. thanks

Choosing between two projects with acceptable payback periods Shell Camp- ing Gear, Inc., is considering two mutually exclusive projects. Each requires an initial investment of $100,000. John Shell, president of the company, has set a maximum payback period of 4 years. The after-tax cash inflows associated with each project are as follows: Cash inflows (CF) Year Project A Project B 1 2 3 $10,000 20,000 30,000 40,000 20,000 $40,000 30,000 20,000 10,000 20,000 4 a. Determine the payback period of each project. b. Because they are mutually exclusive, Shell must choose one. Which should the company invest in? c. Explain why one of the projects is a better choice than the other