Use the present value tables in Appendix A and Appendix B to compute the NPV of each of the following cash inflows: Required: a. $91,000 received at the end of 6 years. The discount rate is 8 percent. b. $6,100 received annually at the end of each of the next 15 years. The discount rate is 9 percent. c. A 10-year annuity of $7,500 per annum. The first $7,500 payment is due immediately. The discount rate is 6 percent. d. $40,250 received annually at the end of years 1 through 5 followed by $34,250 received annually at the end of years 6 through 10. The discount rate is 15 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 $ 57,345 d. Net present value