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': 'Bone marrow depression is seen with chronic administration of \nSelect and explain. \nA. Isoflurane, B. N2O, C. Ether, D. Halothane', 'role': 'user'}, {'content': "Answer: B \nExplanation: (Refer: Morgan and Mikhail's Clinical Anaesthesiology, 5th edition, pg no.163-168)", 'role': 'assistant'}]