This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sedative-Hypnotics and Parkinsonism, Subject name: Pharmacology
[{'content': 'What is the most effective treatment in levodopa-induced psychosis? \nSelect and explain. \nA. Quetiapine, B. Chlorpromazine, C. Trifluoperazine, D. Haloperidol', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Levodopa induced psychosis Hallucinations,confusion in elderly patients Rx - Conventional antipsychotic agents (Phenothiazines) but worsens Parkinsonism , so not recommended Atypical" antipsychotic agents(Clozapine ,Quetiapine)', 'role': 'assistant'}]