Your grandfather has offered you a choice of one of the three following alternatives: $12, 500 now;$6, 250 a year for six years;or $87,000 at the end of six years. Use Appendix B and Appendix D. (a-1) Assuming you could earn 9 percent annually, compute the present value for the following amounts? (Round "PV Factor" to 3 decimal places and final answers to the nearest dollar amount. Omit the "$" sign in your response.) (a-2) Which alternative should you choose? $87,000 received at end of six years $6, 250 received each year for six years $12, 500 received now (b-1) If you could earn 10 percent annually, compute the present value for the following amounts? (Round "PV Factor" to 3 decimal places and final answers to the nearest dollar amount. Omit the "$" sign in your response.) (b-2) Which alternative should you choose? $87,000 received at end of six years $6, 250 received each year for six years $12, 500 received now