10.12 (LO 3) Return on investment Dale 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: Required a. Calculate the margin, asset turnover, and ROI for each of the three distribution channels. b. The corporate office is giving the managers of each channel the option of a customer relationship management system that will allow the managers to gather data about their customers and be more effective in their marketing efforts. The system will cost $800,000 and is expected to generate $160,000 in additional annual segment margin. If distribution channel managers are evaluated based on the trend of their ROIs, which managers will invest in the system? Explain your reasoning