Garth Corporation sells a single product. If the selling price per unit and the variable expense per unit both increase by 10% and fixed expenses do not change, then Contribution margin per unit Increases No change No change Contribution BreaK-even in units Decreases No change No change margin ratio A) B) C) D) Increases No change Increases Increases No change Decreases A. Option A B. OptionB C. OptionC D. OptionD