Sparkle Jewelry sells 500 units, resulting in $75,000 of sales revenue, $32,000 of variable costs, and $20,000 of fixed costs. The number of units that must be sold to achieve $41,000 of operating income is: (Round intermediary calculations to two decimal places, and your final answer up to the nearest whole number.) Group of answer choices 555 units 233 units 710 units 477 units