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
Propranolol is not used in: 
Select and explain. 
A. A–V block, B. Hypertension, C. Hypertrophic obstructive cardiomyopathy, D. Migraine
A: A–V block
Answer: A: A–V block 
Explanation: None