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: Medicine
[{'content': 'DOC for Tourette syndrome \nSelect and explain. \nA. Haloperidol, B. Valproate, C. B complex, D. Clonidine', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'd' i.e., Clonidine Earlier Haloperidol was considered as DOC for Tourette syndrome. Clonidine is considered as DOC for Tourette syndrome", 'role': 'assistant'}]