This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Radiology
[{'content': 'What&;s the name of the sign \nSelect and explain. \nA. Egg shell calcification, B. Homans sign, C. Angle wing sign, D. Deep sulcus sign', 'role': 'user'}, {'content': "Answer: A \nExplanation: Calcification Around the Periphery Lymph Nodes ; Most commonly seen in silicosis and coal-worker's pneumoconiosis. Also seen in sarcoid. Rarely in post-irradiated Hodgkin disease, blastomycosis, scleroderma, amyloid and histoplasmosis. Ref : David Sutton 9th ed", 'role': 'assistant'}]