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 macroscopic indication of morphologic development of primary incisors approximately at: \nSelect and explain. \nA. 11 weeks in utero, B. 14 weeks in utero, C. 16 weeks in utero, D. 6 weeks in utero', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]