This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Treatment, Subject name: Psychiatry
[{'content': 'Best indication for ECT is: \nSelect and explain. \nA. Depression with suicidal tendencies, B. Mania, C. Hysteria, D. Schizophrenia', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A ref: Ahuja, 4th/ep. 71-184 and 5th/e p. 205', 'role': 'assistant'}]