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': 'Mendelsons syndrome is: \nSelect and explain. \nA. Aspiration of gastric contents, B. Aspiration of nasal mucous, C. Hypersensitivity to inhalational anesthetics, D. Faulty intubation syndrome', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Aspiration of gastric contents', 'role': 'assistant'}]