Given the following data: Average operating assets Total liabilities Sales Contribution margin Net operating income $2,976,000 $ 342, 240 $1,488,000 $ 833,280 $ 148,800 Return on investment (ROI) is: Multiple Choice 10.0% 5.0% 56.0% 28.0% If net operating income is $27,000, average operating assets are $243,000, and the minimum required rate of return is 10%, what is the residual income? Multiple Choice $29,700 $21,600 O O $2,700 O $24,300