This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Mood disorders, Subject name: Psychiatry
[{'content': 'Drug of choice for rapid cycles of bipolar disorder is \nSelect and explain. \nA. Valproate, B. Lithium, C. Haloperidol, D. Chlorpromazine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: LITHIUM is the drug of choice for EUPHORIC MANIA VALPROATE is the drug of choice for RAPID CYCLING DISORDER LAMOTRIGINE is the drug of choice for bipolar depression Valproate is the drug used mainly for rapid cyclers-more than 4 episodes of psychosis or depression in one yr Atypical antipsychotics -DOC -for acute mania Ref: Essentials of postgraduate psychiatry By JN Vyas 1st ed Pg 620', 'role': 'assistant'}]