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': 'Diffusion hypoxia is seen with – \nSelect and explain. \nA. Ether, B. Cyclopropane, C. Halothane, D. Nitrous oxide', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Beside N2O, Xenon can cause diffusion hypoxia during recovery.\nDiffusion hypoxia occurs in first 5-10 minutes of recovery.', 'role': 'assistant'}]