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: Psychiatry
[{'content': 'ECT causes \nSelect and explain. \nA. Antegrade amnesia, B. Retrograde amnesia, C. Both, D. None', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Both', 'role': 'assistant'}]