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
The most predictive and dangerous side effect of propranolol that makes it to be avoided in known patient of COPD is induction of - 
Select and explain. 
A. Respiratory failure, B. Acute asthmatic attack, C. Glaucoma, D. Pleural effusion
B: Acute asthmatic attack
Answer: B: Acute asthmatic attack 
Explanation: None