Garth Company sells a single product. If the selling price per unit and the variable expense per unit both increase by 15% and fixed expenses do not change, then: A. Contribution Margin Per Unit - Increases, Contribution Margin Ratio - Increases, Break-Even in Units - Decreases B. Contribution Margin Per Unit - No Change, Contribution Margin Ratio - No Change, Break-Even in Units - No Change C. Contribution Margin Per Unit - No Change, Contribution Margin Ratio - Increases, Break-Even in Units - No Change D. Contribution Margin Per Unit - Increases, Contribution Margin Ratio - No Change, Break-Even in Units - Decreases