Please help me with this MC question and explain the reason! Thanks.

Which of the following statements is TRUE? A. For a project that requires an investment outlay today, and generates cash inows in the future (i.e. C F0 0 for i 2 1) , the NPV is a decreasing function of the cost of capital. B. The IR is a better measure for project appraisal than the NPV rule, because you do not need to know the project's required rate to make a decision. C. For mutually exclusive projects, choosing the project with the highest IRR will always lead to the optimal investment decision. .5 None of statement A, B or C is true. B. All of statements A, B and C are true