The service division of Whispering Winds Industries reported the following results for 2022. Management is considering the following independent courses of action in 2023 in order to maximize the return on investment for this division. 1. Reduce average operating assets by $140,000, with no change in controllable margin. 2. Increase sales $112,000, with no change in the contribution margin percentage. Compute the controllable margin and the expected return on investment for 2023 for each proposed alternative. (Round ROI to decimal place, e.g. 1.5% )