Your aunt is about to retire, and she wants to sell some of her stock and buy an annuity that will provide her with income of $57,000 per year for 30 years, beginning a year from today. The going rate on such annuities is 7.95%. How much would it cost her to buy such an annuity today? a. $695,988.97 b. $638,988.97 c. $689,788.59 d. $644,732.72 e. $650,053.47