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': "Mendelson's syndrome is \nSelect and explain. \nA. Air leak, B. Tracheal rupture during intubation, C. Oesophageal rupture, D. Aspiration of gastric content", 'role': 'user'}, {'content': "Answer: D \nExplanation: D i.e. Aspiration of gastric content - Mendelson's syndrome is d/t aspiration of gastric contentQ - It is prevented by Sellick's maneuver i.e. backward pressure on cricoid cailageQ.", 'role': 'assistant'}]