This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
Which type of pulmonary TB is most likely to give sputum positive - 
Select and explain. 
A. Fibronodular, B. Pleural effusion, C. Cavitary, D. None
C: Cavitary
Answer: C: Cavitary 
Explanation: Ans. is 'c' i.e., Cavitary "Sputum smears are usually positive in patients with laryngeal TB, endobronchial TB and cavitary pulmonary- TB"-- Kelley's"Patients with cavitary pulmonary TB have high bacterial load in their sputum " --Internet