Which of the following is the most appropriate decision rule for mutually exclusive projects?

A. Accept the project with the highest NPV, subject to the condition that the NPV is greater than zero.

B. If the NPV method and the IRR method give conflicting signals, select the project with the highest IRR.

C. Accept both projects if their NPV is greater than zero. D. Accept both projects if their IRR is greater than the required rate of return.

E. Accept the project under payback rule if both projects have positive NPVs