A family friend has asked your help in analyzing the operations of three anonymous companies operating in the same service sector industry. Supply the missing data in the table below: (Loss amounts should be indicated by a minus sign. Do not round your intermediate calculations.) Sales Net operating income. Average operating assets Return on investment (ROI) Minimum required rate of return: Percentage Dollar amount Residual income Company A Company B Company C $ 490,000 $ 770,000 $ 630,000 $ 39,000 $ 168,000 $ 157,000 20% 19 % 17 % % 10 % $ 51,000 $ 5,000