10. A. Total manufacturing expenses/Sales. B. (Sales - Variable expenses)/Sales. C. 1 - (Gross Margin/Sales). D. 1 - (Contribution Margin/Sales). 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: 11. A. Option A B. Option B C. Option C D. Option D 12. The break-even in units sold will decrease if there is an increase in: A. unit sales volume. B. total fixed expenses. C. unit variable expenses. D. selling price. further debution permeted without the prior written consent of Mo Gww.WW Education