Smart Company has two potential investment project alternatives, with an initial investment cost of Birr 2,000,000 each. The future cash flows of each project is given in the table below: Cash Flows Project-B Project-C 1st year Br. 1,000,000 Br. 300,000 2hd year 800,000 500,000 3ro year 600,000 700,000 5th year 400,000 900,000 200,000 year 1, 100,000 Assuming the discount rate is 12% Required: a) Calculate the Payback period for each investment alternatives and which project/s do you accept with a three-year cut-off period for recapturing the initial cash outflow?(3 points) b) Calculate the net present value and profitability index for each investment alternatives and which project/s do you accept if the two projects are mutually exclusive projects