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': 'A 72–year–old patient with Parkinsonism presents with swollen feet. They are red, tender and very painful. You could clear up these symptoms within a few days if you tell the patient to stop taking : \nSelect and explain. \nA. Amantadine, B. Benztropine, C. Bromocriptine, D. Levodopa', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]