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: Microbiology
[{'content': "Infraclavicular lesion in tuberculosis is \nSelect and explain. \nA. Ghon focus, B. Assman focus, C. Simon focus, D. Puhl's focus", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Assman focus - Infraclavicular lesion.', 'role': 'assistant'}]