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.) a. Net present value b. Net present value c. Net present value d. Net present value Amount