You have developed the following pro forma income statement for your corporation: It represents the most recent year's operations, which ended yesterday. Your supervisor in the controller's office has just handed you a memorandum asking for written responses to the following questions: a. If sales should increase by 20 percent, by what percent would earnings before interest and taxes and net income increase? b. If sales should decrease by 20 percent, by what percent would earnings before interest and taxes and net income decrease? c. If the firm were lo reduce its reliance on debt financing such that interest expense were cut in half, how would this affect your answers to parts a and b? a. If sales should increase by 20%. the percentage change in earnings before interest and taxes is___%, (Round to two decimal places.) If sales should increase by 20%, the percentage change in net income is____%. (Round to two decimal places.) b. If sales should decrease by 20%, the percentage change in earnings before interest and taxes is____%. (Round to two decimal places, ) If sales should decrease by 20%, the percentage change in net income is___%, (Round to two decimal places.) c. If sales should increase by 20% and interest expense should decrease by 50%, the percentage change in earnings before interest and taxes is____%. (Round to two decimal places, ) If sales should increase by 20% and interest expense should decrease by 50%, the percentage change in net income is____%. (Round to two decimal places.) If sales should decrease by 20% and interest expense should decrease by 50%, the percentage change in earnings before interest and taxes is____%. (Round to two decimal places.) If sales should decrease by 20% and interest expense should decrease by 50%, the percentage change in net income is___%. (Round to two decimal places.)