Use the present value table in Appendix A and Appendix B to compute the NPV of each of the following cash outflows: Required: a. $23,000 paid at the end of 4 years. The discount rate is 5 percent. b. $6,150 paid at the end of 3 years and $7,750 paid at the end of 5 years. The discount rate is 6 percent. c. $9,800 paid annually at the end of each of the next 4 years. The discount rate is 5 percent. d. $2,110 paid annually at the end of each of the next 4 years and $4,220 paid at the end of the fifth year. The discount rate is 6 percent. (For all requirements, round discount factor(s) to 3 decimal places, all other intermediate calculations and final answers to the nearest whole dollar amount.) Amount 18,929 $ $ 10,955 a. Net present value b. Net present value c. Net present value d. Net present value