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: Pharmacology
Drug not having any role in Acute Asthma is: 
Select and explain. 
A. Ipratropium, B. Steroid, C. Salbutamol, D. Sodium Chromoglycate
D: Sodium Chromoglycate
Answer: D: Sodium Chromoglycate 
Explanation: Sodium Chromoglycate Sodium Chromoglycate