Fruit Sushi Corporation sells delicious fruit sushi at a wholesale price of $4.50 per unit. The variable cost to manufacture is $2.00 per unit. The monthly fixed costs are $8500. Its current sales are 27,000 units per month. If the company wants to increase its operating income by 20%, how many additional units must it sell? (Round any intermediate calculations to two decimal places and your final answer up to the nearest whole unit.) O 4720 glass vases O 8500 glass vases O 121,500 glass vases O 31,720 glass vases