Sandhill 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: Retail Stores Internet Catalog Sales Sales revenue $ 12,000,000 $ 3,700,000 $ 6,600,000 Variable expenses 4,000,000 1,355,000 1,950.000 Direct fixed expenses 5,960,000 994.500 4,188,000 Average assets 8,000,000 3,700,000 2,000,000 Required rate of return 12% 12% 12%(a1) Calculate the margin and asset turnover for each of the three distribution channels. (Round answers to 2 decimal places, eg. 5.12% or 5.12.) Retail Stores Internet Catalog Sales % % % Margin Asset turnover(a2). Calculate the ROI for each of the three distribution channels. (Round answers to 2 decimal places, e.g. 5.12%.) Retail Stores Internet Catalog Sales % % % ROI