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: Gynaecology & Obstetrics
[{'content': 'Which among the following drug is implicated in causing urinary retention \nSelect and explain. \nA. Lisinopril, B. Meperidine, C. Terazosin, D. Losartan', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]