Oriole Decor sells home decor items through three distribution channels-retail stores, the Internet, and catalog sales. Each distribution channel is evaluated as an investment center. Selected results from the latest year are as follows: (a1) Calculate the margin and asset turnover for each of the three distribution channels. (Round answers to 2 decimal places, e.g. 5.12% or 5.12.) Calculate the ROI for each of the three distribution channels. (Round answers to 2 decimal places, e.g. 5.12\%.)