Europa Publications, Inc. specializes in reference books that keep abreast of the rapidly changing political and economic issues in Europe. The results of the company's operations during the prior year are given in the following table. All units produced during the year were sold. (Ignore income taxes.) Sales revenue Manufacturing costs: $1,200,000 Fixed Variable 283,000 616,000 Selling costs: Fixed Variable 24,000 54,000 Administrative costs: Fixed Variable 64,000 19,000 Required 1-a. Prepare a traditional income statement for the company. 1-b. Prepare a contribution income statement for the company. 2. What is the firm's operating leverage for the sales volume generated during the prior year? 3. Suppose sales revenue increases by 12 percent. What will be the percentage increase in net income? 4. Which income statement would an operating manager use to answer requirement (3)