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 obstructive cardiomypathy except - \nSelect and explain. \nA. Asymmertric hypertrophy of septum, B. Systolic motion of anterior leaflet, C. Left ventricle outflow obstruction, D. Beta blockers are not effective', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]