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 diffusion capacity of lung (DLCO) is decreased in all of the following conditions except - 
Select and explain. 
A. Interstitial lung disease, B. Goodpasture's syndrome, C. Emphysema, D. Primary pulmonary hypertension
B: Goodpasture's syndrome
Answer: B: Goodpasture's syndrome 
Explanation: None