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': 'Maximum global warming is by \nSelect and explain. \nA. Desflurane, B. Isoflurane, C. Sevoflurane, D. Halothane', 'role': 'user'}, {'content': "Answer: A \nExplanation: Desflurane is a greenhouse gasIt causes maximum global warmingGlobal warming potential (as an equal amount of CO2)Isoflurane210 timesSevoflurane510 timesDesflurane 1620 times (Refer: Morgan and Mikhail's Clinical Anaesthesiology, 5th edition, pg no. 170)", 'role': 'assistant'}]