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': "Primary amenorrhoea is a feature of all EXCEPT:September 2012 \nSelect and explain. \nA. Turner's syndrome, B. Stein-Leventhal syndrome, C. Rokitansky-Kustner-Hauser syndrome, D. Kallman syndrome", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B i.e. Stein Leventhal syndrome', 'role': 'assistant'}]