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
True about morphology ofAsthma -a) Charcot- leyden crystalb) Irreversiblec) Involve larger airwaysd) Intermittent asthma is better responsive to bronchodilator therapye) Hypersensitive lung 
Select and explain. 
A. acd, B. ade, C. abd, D. ad
B: ade
Answer: B: ade 
Explanation: None