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': 'Antipsychotic drug with prolonged action \nSelect and explain. \nA. Trifluperazine, B. Thioridazine, C. Penfluridol, D. Fluphenazine', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. Fluphenazine', 'role': 'assistant'}]