Computing, Analyzing, and Interpreting Return on Equity and Return on Assets Following are summary financial statement data for Logitech International for 2016 through 2018. a. Compute the return on assets (ROA) for 2018 and 2017. Round answers to one decimal place (ex: 0.2345=23.5% ). b. Compute the profit margin (PM) for 2018 and 2017. Round answers to one decimal place (ex: 0.2345=23.5% ). c. Compute the asset turnover (AT) for 2018 and 2017. Round answers to two decimal places. d. Which component of ROA (profit margin or asset turnover or both) drives the change in ROA in 2018 ? e. Compute the return on equity (ROE) for 2018 and 2017. Round answers to one decimal place (ex: 0.2345=23.5% ). f. Logitech repurchased common shares in 2018 at a cost of $30 million. Did this repurchase increase or decrease the company's ROE