Which of the Following Statements Is FALSE

Which of the following statements is FALSE?

A) The break-even level of an input is the level for which the investment has an internal rate of return (IRR) of zero.
B) The most difficult part of capital budgeting is deciding how to estimate the cash flows and the cost of capital.
C) When evaluating a capital budgeting project,financial managers should make the decision that maximizes net present value (NPV) .
D) Sensitivity analysis reveals which aspects of the project are most critical when we are actually managing the project.