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 first teeth become involved in nursing bottle caries usually are: \nSelect and explain. \nA. Mandibular canines, B. Maxillary anterior teeth, C. Mandibular anterior teeth, D. Maxillary and mandibular teeth', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]