Kate Corporation sells a single product. If the selling price per unit and the variable expense per unit both increase by 20% and fixed expenses do not change, then OA. Contribution Contribution Break-even margin per unit margin ratio in units Increases No change Decreases B. Contribution margin per unit No change Contribution margin ratio No change Break-even in units No change C Contribution Contribution margin per unit margin ratio Increases Increases Break-even In units Decreases D Contribution margin per unit No change Contribution margin ratio Increases Break-even In units No change 5