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: Pathology
[{'content': 'All are true about hypertrophic obstructive cardiomyopathy except - \nSelect and explain. \nA. Asymmetric septal hypertrophy, B. Dilatation of atria, C. Dilatation of ventricles, D. Outflow obstruction', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]