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': 'How long should a palatal crib should be worn by a patient being extracted for thumb sucking habit \nSelect and explain. \nA. One week, B. One month, C. Three months, D. Six months or longer', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]