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
All are true about hypertrophic obstructive cardiomyopathy except - 
Select and explain. 
A. Asymmetric septal hypertrophy, B. Dilatation of atria, C. Dilatation of ventricles, D. Outflow obstruction
C: Dilatation of ventricles
Answer: C: Dilatation of ventricles 
Explanation: None