This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anaesthesia
[{'content': 'Fluoride content is least in \nSelect and explain. \nA. Enflurane, B. Isoflurane, C. Sevoflurane, D. Desflurane', 'role': 'user'}, {'content': "Answer: D \nExplanation: (Refer: Morgan and Mikhail's Clinical Anaesthesiology, 5th edition, pg no.170-171)", 'role': 'assistant'}]