The South Division of Wiig Company reported the following data for the current year. Sales Variable costs Controllable fixed costs Average operating assets $3,000,000 2,010,000 605,000 5,000,000 Top management is unhappy with the investment center's return on investment (ROI). It asks the manager of the South Division to submit plans to improve ROl in the next year. The manager believes it is feasible to consider the following independent courses of action. Increase sales by $300,000 with no change in the contribution margin percentage. Reduce variable costs by $ 160,000 Reduce average operating assets by 3%. 1. 2