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
Which of the following class of drugs is a precipitant of acute asthma? 
Select and explain. 
A. Beta–adrenergic receptor agonists, B. NSAIDs, C. Calcium channel blockers, D. H1 blockers
B: NSAIDs
Answer: B: NSAIDs 
Explanation: None