Learning Source, Inc. has two divisions: Test Preparation and Language Arts. Results (in millions) for the past three years are partially displayed here: (Click the icon to view the results.) Requirements 1. Complete the table by filling in the blanks. 2. Use the DuPont method of profitability analysis to explain changes in the operating-income-to-total-assets ratios over the 2015-2017 period for each division and for Learning Source as a whole. Comment on the results. Operating Operating Revenues / Operating Income / Income / Operating Operating Total Operating Total Total Income Revenues Assets Revenues Assets Assets Test Preparation Division 2015 $ 680 $ 8,000 $ 1,600 % % 2016 990 11 % 44 % 2017 1,150 12.5 % 4.0 % Language Arts Dept. 2015 S 600 $ 2,400 $ 1,600 % % 2016 3,525 2.350 20 % % 2017 2,340 % 2.0 25 % Learning Source Inc. 2015 $ 1,280 $ 10,400 $ 3,200 % % 2016 % % 2017 % % Requirement 2. Use the DuPont method of profitability analysis to explain changes in the operating-income-to-total-assets ratios over the 2015-2017 period for each division and for Learning Source as a whole. Comment on the results. Based on revenues, V The earns higher profit margins. The turns over its assets at around twice the rate as the other division. The ROI of the has been increasing from 2015 to 2017 and the ROI of the has been decreasing. Overall, this has resulted in Learning Source showing aan) ROI over the past three years