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': 'A patient of schizophrenia was started on a new drug, three months later she complains of weight gain. What is the most likely dug? \nSelect and explain. \nA. Olanzapine, B. Amisulpride, C. Risperidone, D. Haloperidol', 'role': 'user'}, {'content': 'Answer: A \nExplanation: All atypical antipsychotics can lead to weight gain and Clozapine is associated with maximum risk of causing weight gain followed by Olanzapine. As Clozapine is not given in the options, Olanzapine\xa0is the correct answer.', 'role': 'assistant'}]