Green Light Ltd. has the option of investing in the following two projects of equal risk; they are mutually exclusive alternatives for expanding the firms capacity. The firms cost of capital is 13%. The cash flows for each project are given in the following table. PROJECT A PROJECT B Initial investment 600,000 280,000 Year Net cash inflows Net cash inflows 1 150,000 150,000 2 200,000 125,000 3 240,000 110,000 4 280,000 Green Light Ltd. has incurred a research and development expenditure of $30,000 initially for project A and $20,000 for project B, both of which are considered sunk costs for the business. Due to seasonal demand, the business believes for project A only, they will have to incur additional electricity charge of $2,000 each year till year 4.The business believes for project B only; they will have to incur additional maintenance cost of $3,000 in year 2 and $2,000 in year 3. At the end of year 4, the business believes that they could sell project A for $50,000 and at the end of year 3 project B for $40,000. The finance manager has also suggested that any investment that takes more than 3 years to pay back the initial investment should be rejected.

Calculate the net present value for each project. Using the net present value criterion, which project is preferable and why? Show workings. (7 marks)