This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Other topics and Adverse effects, Subject name: Anatomy
[{'content': 'Which of the following antiparkinsonian drugs directly activates dopaminergic D2 receptors in the striatum? \nSelect and explain. \nA. Pramipexole, B. Entacapone, C. Benserazide, D. Selegiline', 'role': 'user'}, {'content': 'Answer: A \nExplanation: (Ref: KDT 6/e p419, 420) Directly acting D2 receptor agonists can be Ergot derivatives e.g. bromocriptine and pergolid Non-ergot compounds e.g. pramipexole and ropinirole', 'role': 'assistant'}]