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': 'All are true about hypertrophic cardiomyopathy,Except- \nSelect and explain. \nA. Digoxin is useful, B. Abdominal pain, C. Jaundice, D. Bleeding', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]