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': 'Ghon complex of the lung usually \nSelect and explain. \nA. Undergoes cavitation, B. Undergoes calcification, C. Progresses to tuberculous pneumonia, D. Progresses to military tuberculosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]