Company K has a 30 percent marginal tax rate and uses a 7 percent discount rate to compute NPV. The company started a venture that will yield the following before-tax cash flows: year 0, $12,000; year 1, $21,000; year 2, $24,000; year 3, $17,600. Use Appendix A and Appendix B a. If the before-tax cash flows represent taxable income in the year r r received, compute the NPV of the cash flows