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: Medicine
[{'content': 'TB in HIV infection causes pulmonary disease resembling post primary disease in normal individuals when it occurs during …………………….. stage of HIV infection - \nSelect and explain. \nA. Stage of viraemia, B. Middle third of window period, C. Last third of window period, D. Full blown AIDS', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]