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 development of the first permanent molar is initiated at: \nSelect and explain. \nA. Fourth month in utero., B. 14th month in utero., C. Second month in utero., D. First year after birth.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The development of the first permanent molar is initiated at the fourth month in utero.\nThe second molar is initiated at about the first year after birth, the third molar at the fourth or fifth years.', 'role': 'assistant'}]