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: Forensic Medicine
[{'content': 'Ist molar tooth appears at age of ? \nSelect and explain. \nA. 6 - 7 months, B. 8 - 9 months, C. 10-11 months, D. 12 - 13 months', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., 12 - 13 months", 'role': 'assistant'}]