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
All are seen in ARDS except - 
Select and explain. 
A. Pulmonary edema, B. Hypoxia, C. Hypercapnia, D. Stiff lung
C: Hypercapnia
Answer: C: Hypercapnia 
Explanation: None