In responsibility accounting, how can an investment center manager improve Return on Investment (ROI)? (Choose 3) O Decrease revenue Increase controllable fixed costs Increase controllable variable costs Increase revenue Decrease controllable variable costs Increase average operating assets Decrease controllable fixed costs Reduce average operating assets Question 9 (1 point) Cost-volume-profit analysis includes all of the following assumptions except: (choose All costs can be classified as either variable or fixed Changes in activity are the only factors that affect costs All units produced are sold The behaviour of costs is curvilinear throughout the relevant rang Next Page Page 9 of 18