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': 'Heimlich manoeuvre is indicated for \nSelect and explain. \nA. Gagging, B. Choking, C. Hanging, D. Drowning', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hemilich manoecure is the first aid resque technique for choking.\nChoking is usually accidental.', 'role': 'assistant'}]