Which of the following statements is FALSE? O a. Mutually exclusive projects are projects for which the acceptance of one means that other alternative projects will be rejected O b. There may be more than one IRR for cash flow streams where the cash flows change signs more than once O c. Contingent projects are projects for which the acceptance of one means that other projects will also be accepted O d. The crossover rate is a special discount rate at which the NPV profiles of two projects cross Oe. The NPV profile shows the NPV of a project for various IRRs