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': 'The following is/are concerned with interception of habit: \nSelect and explain. \nA. Massler’s hypothesis, B. Dunlop beta hypothesis, C. Butler’s theory, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]