Capital Budgeting using the NPV function. If the projects are mutually exclusive, which, if any, should the company accept? Why?

If the projects are independent, which, if any, should the company accept? Why?

One of the company$$s managers states $$To me$,$ no matter what else we do$,$ Project D needs to be our first choice because it has the highest cashflows per year.$$ Comment on this manager$$s proposal, considering the concepts of NPV and Payback Method.

Calculate the payback period for each project $.$ Can you accept any projects just based on the backpack period? Which ones and why?