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 30 year old manic patient was prescribed haloperidol 3 months back. For last two days, he has become restless and kept pacing in the room for a day. On examination he was found to have tremors of hand. He is most likely to be suffering from: \nSelect and explain. \nA. Anhedonia, B. Dystonia, C. Restless leg syndrome, D. Akathisia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]