Which of the following statements is CORRECT? a. Variable costs need to be considered in the analysis of a capital budgeting project, but not fixed costs. b. Variable costs and fixed costs need to be considered in the analysis of a capital budgeting project. c. The NPV criterion is preferable for evaluating expansion projects, while the IRR criterion is preferable for evaluating replacement projects. d. The IRR criterion is preferable for evaluating expansion projects, while the NVP criterion is preferable for evaluating replacement projects. e. None of the above