This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous, Subject name: Psychiatry
[{'content': 'Anaesthetic agent used in ECT is: \nSelect and explain. \nA. Ketamine, B. Thiopentone, C. Propofol, D. Methohexital', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Methohexital is most commonly used as an anesthetic agent because of its shoer duration of action and lower association with postictal arrhythmias.', 'role': 'assistant'}]