The ocean division of DHL industries reported the following data for the current year Sales $4,000,000 variable cost $2,600,000 Controllable fixed costs $800,000 Average operating assets $5,000,000 Top management is unhappy with the investment centers return on investment (ROI). It asks the manager of the Ocean Division to submit plans to improve ROI in the next year. The manager believes it is feasible to consider the following independent course of action. 1. Increase sales by $400,00 with no change in the contribution margin percentage 2. Reduce variable costs by $120,000 3. Reduce average operating assets by 4% a. Compute the return on investment (ROI) for the current year b. Compute the ROI under each of the proposed courses of action. (Round to one decimal) c. Propose at least 3 solutions for the Ocean Division to reduce variable costs