A 12-year-old boy with hypertrophic cardiomyopathy (HCM) is being evaluated for management. He is asymptomatic but has a family history of sudden cardiac death. Which of the following is the most appropriate initial recommendation?
A:Start beta-blocker therapy and restrict competitive sports
B:Prescribe diuretics to reduce left ventricular hypertrophy
C:Recommend an implantable cardioverter-defibrillator (ICD) immediately
D:Refer for heart transplant evaluation