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
[{'content': 'The most predictive and dangerous side effect of propranolol that makes it to be avoided in known patient of COPD is induction of - \nSelect and explain. \nA. Respiratory failure, B. Acute asthmatic attack, C. Glaucoma, D. Pleural effusion', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]