Please show me how to calculate these questions.

Your division is considering 2 projects. It's WACC is 12%, and the projects' after-tax cash flows (in millions of dollars) would be as follows: 0 1 N 3 4 Project A -$30 $5 $10 $15 $20 Project B -$30 $20 $10 $8 $6 a. Calculate the projects' NPVS, IRRs, and MIRRs. b. If the two projects are independent, which project(s) should be chosen? Why? c. If the two projects are mutually exclusive and the WACC is 12%, which project(s) should be chosen? Why? d. Define the MIRR. What is the difference between the IRR and the MIRR, and which generally gives a better idea of the rate of return on the investment in a project? Explain