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: Medicine
[{'content': "Pinna calcification is seen in all except - \nSelect and explain. \nA. Gout, B. Ochronosis, C. Frost bite, D. Addison's disease", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]