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: Forensic Medicine
[{'content': 'Two Barr bodies are seen in - \nSelect and explain. \nA. XXX, B. 47 XXY, C. X0, D. 46 XXY', 'role': 'user'}, {'content': 'Answer: A \nExplanation: A number of Barr bodies in a nucleus is less than the number of X-chromosomes.\nThus XXX (super-female) has two Barr bodies.', 'role': 'assistant'}]