This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pharmacotherapy in psychiatry, Subject name: Anatomy
[{'content': 'mood stabilizer used in the management of depression \nSelect and explain. \nA. lamotrigine, B. valproate, C. carbamezepine, D. lithium', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Lamotrigine is a mood stabilizer which works best in BIPOLAR DEPRESSION Lithium is a mood stabilizer which works best in BIPOLAR MANIA valproate is a mood stabilizer which works best in RAPID CYCLING Ref. kaplon and sadock, synopsis of psychiatry, 11 th edition, 935', 'role': 'assistant'}]