Question 8 of 10 1/15 View Policies Current Attempt in Progress Banner Company had the following operating data for the current year: sales, $500.000, contribution margin, $100.000 total foed costs (controllable),$60.000, and average total operating assets. $200,000. If management is able to improve its contribution margin by $20,000 and hold its fixed costs constant, what would Banner's ROI be for the year? 20% O 30% 50% O 12% e Textbook and Media