Violet Manufacturing Company sold 15,000 units during the current year. The variable cost format income statement for Violet Manufacturing Company is: Sales $180,000 Variable expenses 100,000 Contribution margin $80,000 Fixed expenses 60,000 Operating income $20,000 What is the contribution margin per unit? What is the contribution margin per unit? O $6.56 $1.20 $5.33 O $7.20