3. In which of the following cases can NPV and IRR lead to different decisions? I. Project cash flows are not conventional, signs change more than once. II. Project cash flows are conventional, signs change only once. (III) An investment decision involves mutually exclusive choices. A) I and III only B) I and II only C) III only D) I, II and III E) I only 4. You are considering a project that costs $600 and has expected cash flows of $224, $250.88 and $280.99 over the next three years. If the appropriate discount rate for the project's cash flows is 10%, what is the net present value of this project? A) $22.09 B) The NPV is negative C) $84.75 D) $0.00 E) $49.34