Consider the following data for Upper \& Lower divisions of a Lakes Co. : The company's required rate of return is 6.0%. Show your work to support the following calculations: a. Calculate the ROI for each division. b. Calculate the Residual Income (RI) for each division. c. Calculate the Return on Sales (ROS) for each division. d. Based on the results of your analysis above, what is your concern with the Upper Division's results? Discuss potential business issues using your analysis above, do not repeat ratio results