Nine Point Industries is evaluating three projects: Projects A, B and C. The cash flows for each project are shown below. Numbers in brackets are negative values. For which of the following projects would the IRR be an unreliable tool? Project Year o Year 1 Year 2 Year 3 Year 4 Project A (100) (200) 150 120 140 Project B (100) 200 (150) 150 120 Project C (100) 100 100 100 100 Project A and B Project B Project A and C O Project A O Project C