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': 'Drug of choice for anti-psychotic induced Parkinsonism \nSelect and explain. \nA. Pimavanserin, B. Trihexyphenidyl, C. Droxidopa, D. Pramipexole', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Central anticholinergics  are used for treatment of drug induced parkinsonism', 'role': 'assistant'}]