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': 'Barr body is seen in : \nSelect and explain. \nA. Turners syndrome, B. Klinefelters syndromeTesticular feminisation, C. Tesiicular leminisation syndrome, D. 46 XY', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Klinefelters syndrome', 'role': 'assistant'}]