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
The results of the pulmonary functions tests shownbelow, the best diagnosis is 
Select and explain. 
A. Asthma, B. Asbestosis, C. ARDS, D. Silicosis
A: Asthma
Answer: A: Asthma 
Explanation: Ans. is 'a' i.e., Asthma All expiratory parameters are reduced in the data given with timed vital capacity of 29%. FEV1/FVC is reduced in obstructive airway disease with lowering of peak expiratory flow rates. Due to air trapping in asthma the DLco may be normal or increased