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
A young runner with history of seasonal running nose, complains of sudden onset dyspnea early morning that improved after 2-3 hours. He has history of similar episodes in the past.on examination, patient is tachypneic, diffuse polyphonic expiatory wheeze heard on auscultation of chest, His x-ray is  normal. All except one is true regarding the clinical scenario. 
Select and explain. 
A. Diffusion Lung capacity for carbon monoxide is Normal, B. FEV1% is decreased, C. Necrosis of airways, D. Microvascular leakage resulting in airway edema.and plasma exudation into airway lumen
C: Necrosis of airways
Answer: C: Necrosis of airways 
Explanation: Clinical features are suggestive of Bronchial Asthma. There is no necrosis of airway in Bronchial Asthma.