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': 'Miliary TB is \nSelect and explain. \nA. Primary, B. Post-primary, C. Extrapulmonary, D. None', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Post-primary", 'role': 'assistant'}]