Your retirement account currently has a balance of $42,000. You plan to contribute an additional $500 to it each month until you retire in about 35 years. If the account earns an APR of 9%, compounded monthly, what will be your account balance when you retire? a) $5,144,320 Ob) $502,230 c) $2,151,651 d) $252,000 O e) $2,439,554