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': 'Hob nail cells are seen in : \nSelect and explain. \nA. Hilus cell tumor, B. Clear cell carcinoma, C. Dysgerminoma, D. Arrhenoblastoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Clear cell carcinoma', 'role': 'assistant'}]