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