<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 70-year-old man comes to the physician for a follow-up examination of diffuse exertional chest pain which he has successfully been treating with sublingual nitroglycerin for the past year. The patient has been taking lisinopril daily for essential hypertension. His pulse is 75min and regular, and blood pressure is 15590 mm Hg. Cardiac and pulmonary examination show no abnormalities; there is no peripheral edema. A decrease of which of the following is the most likely explanation for the improvement of this patients chest pain?? A: Ventricular compliance, B: Peripheral arterial resistance, C: Electrical conduction speed, D: Venous pooling, E: End-diastolic pressure,  <response>: This is a clinical vignette about a 70-year-old man with a history of exertional chest pain that has improved with nitroglycerin and lisinopril treatment. He has hypertension. The question is asking what physiological change is most likely responsible for the improvement in his chest pain symptoms.Based on the information provided, this patient likely has angina caused by coronary artery disease. Nitroglycerin would improve his chest pain by dilating coronary arteries and increasing blood flow to the heart. Lisinopril is an ACE inhibitor used to treat hypertension, but it also reduces afterload by dilating arteries and decreasing peripheral resistance. This decreases the workload on the heart. The improvement in chest pain is most likely due to a decrease in end-diastolic pressure in the left ventricle. This reduces oxygen demand of the myocardium. The other options do not directly explain the improvement in symptoms.E: End-diastolic pressure 