Match the items in the two columns below by entering the appropriate code letter in the space provided. a. The amount of revenue remaining after deducting variable costs. b. Costs that contain both a variable and a fixed element. c. The percentage of sales dollars available to cover fixed costs and produce income. d. Identifies the activity which causes changes in the behavior of costs. e. The difference between actual or expected sales and sales at the break-even point. f. Costs that vary in total directly and proportionately with changes in the activity level. g. The level of activity at which total revenues equal total costs. h. The range over which the company expects to operate during the year. i. Costs that remain the same in total regardless of changes in the activity level. j. A costing approach in which all manufacturing costs are charged to the product. k. A method that uses the total costs incurred at the high and low levels of activity. l. A costing approach in which only variable manufacturing costs are product costs and fixed manufacturing costs are period costs (expenses). 1. Activity index2. Variable costs3. Fixed costs4. High-low method5. Relevant range6. Mixed costs7. Break-even point8. Contribution margin9. Margin of safety10. Contribution margin ratio11. Variable costing12. Absorption costing