Return on Investment (ROI) and Residual Income (RI) Question: Selected sales and operating data for three divisions of different structural engineering firms are given as follows: Required: 1. Compute the return on investment (ROI) for each division, by first finding the margin and turnover. - Division A Margin = [DAM ] - Division A Turnover =[DAT] - Division A ROI = [ AROI ] - Division B Margin = [DBM ] - Division B Turnover =[DBT] - Division B ROI =[BROl] - Division C Margin = [DCM ] - Division C Turnover =[DCT] - Division C ROI = [CROl ] 2. Compute the residual income (RI) for each division. - Division A RI = [ARI] - Division B RI =[BRI] - Division C RI = [CRI]