Answer:
e. Projects with "normal" cash flows can have only one real IRR
Step-by-step explanation:
Normal cash flow refers to normal expected cash flow from the project, it might be negative, or positive. But generally there is a pattern in such cash flows. Initially they might be negative, but as the project starts getting mature there is positive cash flow.
This is normal circumstance. Under this there is only one real IRR. IRR is represented as the rate of return where present value of inflows = present value of outflows.
Thus, statement is true and correct.