The service division of raney industries reported the following results for 2013. sales $576,000 variable costs 316,800 controllable fixed costs 66,603 average operating assets 621,378 management is considering the following independent courses of action in 2014 in order to maximize the return on investment for this division. 1. reduce average operating assets by $126,744, with no change in controllable margin. 2. increase sales $105,000, with no change in the contribution margin percentage. compute the controllable margin and the return on investment for 2013. (round roi to 1 decimal place, e. g. 1.5%.) controllable margin $ return on investment for 2013 % link to text compute the controllable margin and the expected return on investment for each proposed alternative. (round roi to 1 decimal place, e. g. 1.5%.) alternative 1 alternative 2 controllable margin $ $ expected return on investment % %