Which statement is correct? A) A sign is a mistake proof device that ensures that a particular action will take place. B) Poka yoke only informs people about the desired behavior or action to be taken. C) Reducing variability increases work-in-progress (WIP), which in turn reduces cycle time. D) Standardized work is key for continuous improvement (or kaizen) as it provides a baseline to assess changes. E) Tools to increase transparency rely mainly on auditory stimulus. B C D A E