Use the present value table in Appendix A and Appendix B to compute the NPV of each of the following cash outflows: Required: a. $23,750 paid at the end of 4 years. The discount rate is 3 percent. b. $4,400 paid at the end of 3 years and $5,600 paid at the end of 5 years. The discount rate is 6 percent. c. $10,500 paid annually at the end of each of the next 4 years. The discount rate is 3 percent. d. $1,490 paid annually at the end of each of the next 4 years and $2,980 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 a. Net present value b. Net present value c. Net present value d. Net present value