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': 'Least blood gas paition coeficient anesthetic agent: \nSelect and explain. \nA. Desflurane, B. Nitrous oxide, C. Halothane, D. Ether', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A i.e. Desflurane', 'role': 'assistant'}]