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
Asthma is associated with all except - 
Select and explain. 
A. Hyper recactive airways, B. Persistent cough, C. Episodic wheezing, D. Normal Spirometry
D: Normal Spirometry
Answer: D: Normal Spirometry 
Explanation: None