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': 'Treatment of choice in acute Bipolar disorder \nSelect and explain. \nA. Valproate, B. Lamotrigine, C. Lithium, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Lithium', 'role': 'assistant'}]