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': 'Compared with other mullerian duct defects, a transverse vaginal septum is associated with lower rate of \nSelect and explain. \nA. Endometriosis, B. Renal anomalies, C. Ectopic pregnancy, D. Retrograde menstruation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: In contrast to other mullerian duct defects, transverse vaginal septum is associated with few urologic abnormalities.', 'role': 'assistant'}]