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': 'Drugs that can be used in opioid de–addiction are ? \nSelect and explain. \nA. Clonidine, B. Diazepam, C. Methadone, D. All of the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]