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
[{'content': 'Asthma is associated with all except - \nSelect and explain. \nA. Hyper recactive airways, B. Persistent cough, C. Episodic wheezing, D. Normal Spirometry', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]