Which of the following statements is correct regarding contribution margin? O A. The contribution margin income statement is organized by cost behavior. B. Companies that sell more than one product can disregard sales mix when performing CVP analysis. O C. The total contribution margin tells managers the amount by which sales revenue exceeds cost of goods sold. OD. The variable cost percentage represents the amount from each unit sale that covers variable costs. E. The unit contribution margin is calculated by subtracting the unit fixed cost from the sales price