This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Dental
[{'content': 'When removing a rubber dam. The first step is to: \nSelect and explain. \nA. Remove the clamp, B. Release the holder, C. Apply a water soluble lubricant, D. Cut the interseptal rubber with scissors', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]