Which of the following types of cardiomyopathy are characterized by diastolic dysfunction caused by rigid ventricular walls that impair diastolic filling and ventricular stretch?
1) Hypertrophic cardiomyopathy (HCM)
2) Arrhythmogenic right ventricular cardiomyopathy (ARVC)
3) Restrictive cardiomyopathy (RCM)
4) Dilated cardiomyopathy (DCM)