Use the present value tables in Appendix A and Appendix B to compute the NPV of each of the following cash inflows: Required: a. $22,200 received at the end of 15 years. The discount rate is 4 percent. b. $7,040 received at the end of 4 years and $10,850 received at the end of 8 years. The discount rate is 6 percent. c. $2,090 received annually at the end of each of the next 7 years. The discount rate is 9 percent. d. $44,000 received annually at the end of each of the next 3 years and $81,750 received at the end of the fourth year. The discount rate is 5 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