it is my last post. please complete a,b,c and d

thank you!

4. (20%) (Project analysis) Consider the following four projects: Project Cash flow at yr 0 Cash flow at yr 1 Cash flow at yr 2 Cash flow at yr 3 A |-3000 3000 1000 500 | -3000 -2000 7000 2000 C -5000 5000 1000 10000 D -8000 |2000 3000 12000 E -2000 1000 8000 8000 a. .(5%) Determine the payback period for each of the projects. b. (5%) Determine the discounted payback period for each of the projects. c.(5%) Calculate the NPV of each of the project if interest rate is 4% compounded yearly. d.(5%) Calculate the IRR for each of the projects