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': 'All of the following are side effects of ropinirole except - \nSelect and explain. \nA. Sedation, B. Nausea, C. Retroperitoneal fibrosis, D. Hallucination', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Retroperitoneal fibrosis o Ropinirole can cause nausea, sedation, hallucinations, constipation and ohostatic hypotension.", 'role': 'assistant'}]