<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 73-year-old man presents to his primary care physician with chest pain. He noticed the pain after walking several blocks, and the pain is relieved by sitting. On exam, he has a BP 15589 mmHg, HR 79 bpm, and T 98.9 F. The physician refers the patient to a cardiologist and offers prescriptions for carvedilol and nitroglycerin. Which of the following describes the mechanism or effects of each of these medications, respectively?? A: Increased cAMP; Increased cAMP, B: Increased contractility; Decreased endothelial nitrous oxide, C: Decreased cAMP; Increased cGMP, D: Decreased cGMP; Increased venous resistance, E: Increased heart rate; Decreased arterial resistance,  <response>: This is a question about the mechanisms of action of two cardiovascular medications, carvedilol and nitroglycerin, in the context of a patient presenting with chest pain suggestive of angina. The key points are:- Carvedilol is a beta blocker that decreases heart rate and contractility by blocking beta-adrenergic receptors and decreasing cAMP production in the heart. - Nitroglycerin is a vasodilator that relaxes vascular smooth muscle by increasing cGMP, leading to venous and arterial dilation.C: Decreased cAMP; Increased cGMP 