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 cardiomyopathy except \nSelect and explain. \nA. Assymetrical septal hypertrophy, B. Systolic ventricular dysfunction is absent, C. Anterior leaflet movement is delayed, D. Cardiac output is diminished', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]