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': 'All may cause traumatic asphyxia, except: Al 09 \nSelect and explain. \nA. Railway accident, B. Road traffic accident, C. Accidental strangulation, D. Stampede', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. Accidental strangulation', 'role': 'assistant'}]