Which of the following statements is correct?

a b

An investment project with an unconventional cash flow pattern can have more than one internal rate of return.

For all investment proposals for which a cash flow from operations can be provided an internal rate of return can be computed.

The required rate of return must be known before the internal rate of return can be computed.

The ranking of two mutually exclusive projects by NPV is not affected by a change in the required rate of return.