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: Pathology
[{'content': 'Scar carcinoma of lung is seen most commonly following - \nSelect and explain. \nA. Tuberculosis, B. Irradiation, C. Infarct, D. All', 'role': 'user'}, {'content': "Answer: D \nExplanation: Ans. is 'a' i.e., Tuberculosis; 'b' i.e., Irradiation & 'c' i.e., Infarct Scar Ca seen after --> Old infarcts, metallic foreign bodies, wounds, granulomatous infection such as T.B. These carcinomas are usually Adenocarcinomas", 'role': 'assistant'}]