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
The following drug is contraindicated in bronchial asthma : 
Select and explain. 
A. Propranolol, B. Ipatropium bromide, C. Theophylline, D. Ketotifen
A: Propranolol
Answer: A: Propranolol 
Explanation: None