Compute, Disaggregate, and Interpret Competitors' Rates of Return Selected balance sheet and income statement information for the drug retailers CVS Health Corporation and Walgreen Co. follows. Assume tax rate of 35%. ($ millions) CVS Health Walgreen Sales revenue-2017 $184,765 $118,214 Interest expense-2017 1,062 728 Net income-2017 6,623 4,101 Total assets-2017 95,131 66,009 Total assets-2016 94,462 72,688 Stockholders' equity-2017 37,695 28,274 Stockholders' equity-2016 36,834 30,281 a. Compute the 2017 return on assets (ROA) for each company. (Round your answers to one decimal place.) CVS Health Walgreen ROA % % b. Disaggregate ROA into profit margin (PM) and asset turnover (AT) for each company. (Round your answers to one decimal place.) CVS Health Walgreen PM AT % % c. Compute the 2017 return on equity (ROE) and return on financial leverage (ROFL) for each company. (Round your answers to one decimal place.) CVS Health ROE ROFL Walgreen % % % %