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
Blood gas analysis in type I respiratory failure shows - 
Select and explain. 
A. ↑pCO2↓pO2, B. (N) pCO2 .↓pO2, C. ↓pCO2 .↓pO2, D. All are the false
B: (N) pCO2 .↓pO2
Answer: B: (N) pCO2 .↓pO2 
Explanation: None