This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Sympathetic System, Subject name: Pharmacology
[{'content': 'Propanolol is useful in the treatment of all of the following EXCEPT: \nSelect and explain. \nA. Angina, B. Paial atrioventricular block, C. Idiopathic hyperophic subaoic cardiomyopathy, D. Familial tremor', 'role': 'user'}, {'content': 'Answer: B \nExplanation: b blockers can be used in - HTN/MI Angina Cardiac arrythmias Pheochromocytoma Thyrotoxicosis Migraine Anxiety Essential tremor Glaucoma Hyperophic obstructive cardiomyopathy.', 'role': 'assistant'}]