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': 'In the HIV positive patient with tuberculosis, all are true except - \nSelect and explain. \nA. Decreased cavitation in lungs, B. Increased sputum positively forAFB, C. Highly variable tuberculin tests, D. Decreased fibrosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]