Which of the following statements is correct? A. If the NPV of a project is positive then the payback rule will always accept the project. B. If the NPV of a normal cash flow project is negative then the IRR will always be greater than cost of capital. C. For projects in which the cash flows switch direction (i.e. from positive to negative or vice-versa) more than once, the NPV criteria may give multiple solutions. D. For independent projects with normal cash flows, the NPV, IRR rules are equally valid and give the same accept/reject decision. E. If the NPV of a project is greater than zero, then the IRR will always be less than the required rate of return.