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': 'Approximately how many enamel rods will be present in a maxillary molar? \nSelect and explain. \nA. 5 million, B. 7 million, C. 9 million, D. 12 million', 'role': 'user'}, {'content': 'Answer: D \nExplanation: The number of enamel rods ranges from 5 million in Lateral incisor and 12 million in upper 1st molar.', 'role': 'assistant'}]