Firm A has $9,700 in assets entirely financed with equity. Firm B also has $9,700 in assets, but these assets are financed by $4,850 in debt (with a 10 percent rate of interest) and $4,850 in equity. Both firms sell 15,000 units of output at $2.50 per unit. The variable costs of production are $1, and fixed production costs are $13,000. (To ease the calculation, assume no income tax.) a. What is the operating income (EBIT) for both firms? Round your answers to the nearest dollar. Firm A: $ Firm B: $ b. What are the earnings after interest? Round your answers to the nearest dollar. Firm A: $ Firm B: $ c. If sales increase by 15 percent to 17,250 units, by what percentage will each firm's earnings after interest increase? To answer the question, determine the earnings after taxes and compute the percentage increase in these earnings from the answers you derived in part b. Round your answers to one decimal place