A patient with dysprea and angina fails medication management of his symptoms with beta-blockers, ACE-Inhibitors and calcium channel blockers. He undergoes complete cardiac evaluation which uncovers the presence of nonobstructive, end-stage hypertrophic cardiomyoputhy, Which of the following is the most appropriate treatment at this point in time? A. Aggessive diuresis B. Candiac transplaneation C. Implantable intracardiac pacing D. Surgical meectomy