3. The following information is available for Medical Sales, Inc.: Sales $550,000 Cost of Goods Sold 250,000 Total fixed expenses Total variable expenses 160,000 300,000 Which of the following statements is true: A. Contribution Margin of $140,000 B. Contribution Margin of $250,000 C. Contribution Margin of $300,000 D. Contribution Margin of $390,000 How mech