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
Ipratropium bromide used in bronchial asthma, is : 
Select and explain. 
A. β-Sympothomimetics, B. Methylxanthines, C. Anticholinergics, D. Mast cell stabilizers
C: Anticholinergics
Answer: C: Anticholinergics 
Explanation: None