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': "A person comes in contact with other. This is called- \nSelect and explain. \nA. Locard principle, B. Quetlets rule, C. Petty's principle, D. None of the above", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]