Disaggregating Return on Assets over Multiple Periods Following are selected financial statement data from 3M Company for 2015 through 2018. $ millions Total Assets Net Income Sales 2015 $32,883 $4,841 $30,274 2016 32,906 5,058 30,109 2017 37,987 4,869 31,657 2018 36,500 5,363 32,765 a. What was 3M Company's return on assets (ROA) for 2016, 2017, and 2018? Round answers to one decimal place (ex: 0.2345 = 23.5%). 2016 15.4% 2017 2018 8.9% x 3.6% x b. Determine profit margin (PM) for each of the three years 2016-2018. Round answers to one decimal place (ex: 0.2345 = 23.5%). 2016 16.8% 2017 15.4% 2018 16.4% c. Determine asset turnover (AT) for each of the three years 2016-2018. Round answers to two decimal places. 2016 2017 2018 91.5 x 83.34 x 89.77 x