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: Physiology
Pulmonary function abnormalities in interstitial lung diseases include all of the following except: 
Select and explain. 
A. Reduced vital capacity, B. Reduced FEV1/FVC ratio, C. Reduced diffusion capacity, D. Reduced total lung capacity
B: Reduced FEV1/FVC ratio
Answer: B: Reduced FEV1/FVC ratio 
Explanation: B i.e. Reduced FEV1/FVC ratio