Charlie Stone wants to retire in 30 years, and he wants to have an annuity of $1,000 a year for 20 years after retirement Charlie wants to receive the first annuity payment at the end of the 31st year. Using an interest rate of 10%, how much must Charlie invest today in order to have his retirement annuity (round to the nearest $10)? Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an answer. a $440 b $490 U $540 A. $570