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
FEV1/FEVC ratio is decreased in all,except : 
Select and explain. 
A. Bronchiectasis, B. Emphysema, C. Chronic bronchitis, D. Tuberculosis
D: Tuberculosis
Answer: D: Tuberculosis 
Explanation: None