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: Radiology
[{'content': 'Egg shell calcification is seen in all except – \nSelect and explain. \nA. Sarcoidosis, B. Silicosis, C. Post irradiation lymphoma, D. Bronchogenic CA', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]