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: Anaesthesia
[{'content': 'For Foreign bodies are retained in the larynx causing choking, first line of management is \nSelect and explain. \nA. Airway inseion, B. Hemilich manouvere, C. Hemilich valve, D. Tracheostomy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Hemilich manouvere', 'role': 'assistant'}]