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': 'Edmund Locard is known for his : \nSelect and explain. \nA. System of personal identification using the body measurement, B. Finger print study, C. Formula for estimation of stature, D. Theory of exchange', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Theory of exchange', 'role': 'assistant'}]