Your grandfather has offered you a choice of one of the three following alternatives: $15,000 now, $8,000 a year for seven years; or $112,000 at the end of seven years. (Use o Financial calculator to arrive at the answers. Round the final onswers to the nearest whole dollar.) a-1. Assuming you could earn 9 percent annually, compute the present value for the following amounts. a-2. Which alternative should you choose? $112,000 received at the end of seven years $8.000 received each year for seven years $15.000 received now b-1. If you could earn 12 percent annually, compute the present value for the following amounts a-2. Which alternative should you choose? $112,000 received at the end of seven years $8,000 received each year for seven years $15,000 received now b-1. If you could earn 12 percent annually, compute the present value for the following amounts b-2. Which alternative should you choose? $112,000 received at the end of seven years