Cullumber 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 Sales revenue $8,914,800 Internet $3,520,000 Catalog Sales $2,865,000 Variable expenses 3,910,000 1,372,000 1,770,000 Direct fixed expenses 3,845,876 894,880 946,020 Average assets 7,820,000 3,520,000 1,910,000 Required rate of return 12% 12% 12% (a1)