This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Anatomy
This arrangement of myofibrils are found in 
Select and explain. 
A. Dilated cardiomyopathy, B. Constrictive cardiomyopathy, C. Fibroelastic cardiomyopathy, D. Hyperophic cardiomyopathy
D: Hyperophic cardiomyopathy
Answer: D: Hyperophic cardiomyopathy 
Explanation: Refer robbins 9/e 569 Hyperophic cardiomyopathy (HCM) is a disease in which the hea muscle (myocardium) becomes abnormally thick (hyperophied). The thickened hea muscle can make it harder for the hea to pump blood. Hyperophic cardiomyopathy often goes undiagnosed because many people with the disease have few, if any, symptoms and can lead normal lives with no significant problems. However, in a small number of people with HCM, the thickened hea muscle can cause shoness of breath, chest pain or problems in the hea's electrical system, resulting in life-threatening abnormal hea rhythms (arrhythmias).