Your uncle is about to retire, and he wants to buy an annuity that will provide him with $57,000 of income a year for 20 years, with the first payment coming immediately. The going rate on such annuities is 5.25%. How much would it cost him to buy the annuity today? a $827,207.28 b $856,488.95 c $732,041.84 d $915,052.30