Liz Raiborn Inc. has the following financial results for the years 2019 through 2021 for its three regional divisions: 2019 2020 2021 $ 14,475 6,275 11,975 $ 32,725 $ 21,575 6,575 12,575 $ 40,725 $ 25,575 6,775 12,875 $ 45, 225 Revenue Southwest Midwest Southeast Total Net Operating Income Southwest Midwest Southeast Total Average Total Assets Southwest Midwest Southeast Total $ 675 825 575 $ 2,075 $ 775 1,175 775 $ 2,725 $ 925 1,125 1,175 $ 3,225 $ 13,575 4, 275 4,875 $ 22,725 $ 13, 775 3,775 5, 175 $ 22,725 $ 16, 375 3,775 5,175 $ 25,325 Required: Calculate return on sales (ROS), asset turnover (AT), and return on investment (ROI) for each division and also for the firm as a whole for each of the three years 2019, 2020, and 2021. (Note: Due to rounding your percentages, the totals for the firm might not be the actual total of the individual divisions.) (Round "Asset turnover (AT)" answers to 3 decimal places and other answers to 1 decimal place.) 2019 2020 2021 Assessment Tool iFrame Return on sales (ROS) Southwest Midwest % % % % % % % % Southeast % % % Firm % Asset turnover (AT) Southwest Midwest Southeast Firm Return on investment (ROI) Southwest Midwest % % % % % % % % % Southeast % % % % Firm %