b Apply cost-benefit evaluation technique to find answer of following scenario: Year Project 1 Project 2 Project 3 0 -250000 1 100000 200000 130000 2 150000 350000 130000 3 200000 100000 230000 4 250000 150000 280000 5 300000 100000 390000 a. Calculate the net present value for each of the projects 1, 2 and 3 shown above using each of the discount rates 6%, 12% and 15%. b. For each of the discount rates, decide which is the best project