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': 'A patient posted for surgery has raised intracranial tension. Which of the following anesthetics would be preferred in him? \nSelect and explain. \nA. Enflurane, B. Sevoflurane, C. Isoflurane, D. Desflurane', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. c. Isoflurane', 'role': 'assistant'}]