The Sterling Tire Company's income statement for 20XX is as follows: STERLING TIRE COMPANY Income Statement Year ended December 31, 20xx Sales (30,000 tires at $45 each) Less: Variable costs (30,000 tires at $30) $ 1,350,000 900,000 Contribution margin Less: Fixed costs 450,000 300,000 Earnings before interest and taxes (EBIT) Interest expense 150,000 60,000 Earnings before taxes (EBT) Income tax expense (35%) 90,000 31,500 Earnings after taxes (EAT) $ 58,500 Given this income statement, compute the following: a. Degree of operating leverage. (Round the final answer to 2 decimal places.) DOL b. Degree of financial leverage. (Round the final answer to 2 decimal places.) DFL c-1. Degree of combined leverage. (Do not round the intermediate calculations. Round the final answer to 2 decimal places.) DCL c-2. Using your answers to a. and b. calculate the percentage increase in EBIT and EBT from a 20 percent increase in sales volume. (Do not round the intermediate calculations. Round the final answers to 2 decimal places.) EBIT EBT 3 c-3. Does financial or operating leverage have the greater impact? DFL DOL d. Break-even point in units. (Round the final answer to the nearest whole number.) Break-even point tires e. Break-even point considering the interest expense as a fixed cost. Break-even point tires