It is appropriate to use the profitability index to choose projects when: O you need to choose the timing of the investment. O the projects have different lives. O when there are borrowing type cash flows. O when there is capital rationing. O choosing among mutually exclusive projects Accounting break even is: Does not require a discount rate O Fixed cost with depreciation divided by average revenue O Fixed cost without depreciation divided by marginal revenue O The same as NPC break even