a) find example when one capital budgeting metric should be preferable to another one and vice versa (i.e., when a firm might focus on NPV rather than IRR or something else, and find a case when IRR should be favored relative to other metrics); b) which metric(s) do you find more (less) important? Why?

Also, discuss the difference between leveraged and unleveraged NPV and IRR metrics. What is the purpose of calculating two types of NPV and IRR?