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: Surgery
[{'content': "Localised idiopathic fibrosis is seen in all of the following except- \nSelect and explain. \nA. Riedel's struma, B. Hypertrophic scar, C. Sclerosing cholangitis, D. Panniculitis", 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]