Current Attempt in Progress Carla Vista Plumbing Products serves both residential and commercial clients. Annual financial information for Carla Vista is as follows: (a) If variable costs for the residential business increase by 20%, what is the new degree of operating leverage (DOU)? (Round answer to 4 decimal pleces, es. 5.2500.) Degree of operating heverage (DOL) Current Attempt in Progress Carla Vista Plumbing Products serves both residential and commercial clients. Annual financial information for Carla Vista is as follows: (a) If variable costs for the residential business increase by 20%, what is the new degree of operating leverage (DOU)? (Round answer to 4 decimal pleces, es. 5.2500.) Degree of operating heverage (DOL)