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: Pharmacology
[{'content': 'Drug of chocie for schizophrenia is: \nSelect and explain. \nA. Olanzapine, B. Haloperidol, C. Lithium, D. Chlorpromazine', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]