This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Misc., Subject name: Forensic Medicine
[{'content': "Estimation of age done after 25 years with changes in teeth is by \nSelect and explain. \nA. Galton system, B. Bertillon system, C. Gustafsan's method, D. Pearson's formula", 'role': 'user'}, {'content': "Answer: C \nExplanation: (C) Gustafsan's method > Gustafson's Method: The age estimation of adult over 25 years depends on the physiologic age changes in each of the dental tissue.", 'role': 'assistant'}]