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
To prevent exercise induced bronchial asthma drug used is - 
Select and explain. 
A. Sodium chromoglycate, B. Ipratropium bromide, C. Terbutaline, D. Epinephrine
A: Sodium chromoglycate
Answer: A: Sodium chromoglycate 
Explanation: None