( TCO D) Return on investment( ROI) is equal to the margin multiplied by 2. Question:( TCO D) For which of the following decisions are opportunity costs relevant? The decision to make or buy a needed part The desision to keep or drop a product line( A) Yes Yes( B) Yes No( C) No Yes( D) No No 3. Question:( TCO D) Last year, the House of Orange had sales of $ 826,650, net operating income of $ 81,000, and operating assets of $ 84,000 at the beginning of the year and $ 90,000 at the end of the year. What was the company ' s turnover, rounded to the nearest tenth? 1. Question:( TCO D) Data for December concerning Dinnocenzo Corporation ' s two major business segments-Fibers and Feedstocks-appear below: Sales revenues, Fibers $ 870,000 Sales revenues, Feedstocks $ 820,000 Variable expenses, Fibers $ 426,000 Variable expenses, Feedstocks