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: ENT
[{'content': 'Cauliflower ear is - \nSelect and explain. \nA. Keloid, B. Perchondritis in Boxers, C. Squamous cell carcinoma, D. Anaplastic cell carcinoma', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]