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': 'Stack formula is for age estimation from dental pattern in: \nSelect and explain. \nA. Infants, B. Adults, C. 25-50 years age group, D. Above 50', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Infants', 'role': 'assistant'}]