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
Universal finding is asthma is - 
Select and explain. 
A. Hypoxia, B. Hypercarbia, C. Respiratory acidosis, D. Metabolic acidosis
A: Hypoxia
Answer: A: Hypoxia 
Explanation: None