<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 75-year-old man with hypercholesterolemia, coronary artery disease, and history of a transient ischemic attack TIA comes to your office for evaluation of hypertension. Previously, his blood pressure was controlled with diet and an ACE inhibitor. Today, his blood pressure is 180115 mm Hg, and his creatinine is increased from 0.54 to 1.2 mgdL. The patient reports that he has been compliant with his diet and blood pressure medications. What is the most likely cause of his hypertension?? A: Progression of his essential hypertension, B: Renal artery stenosis, C: Coarctation of the aorta, D: Pheochromocytoma, E: Hypothyroidism,  <response>: Based on the information provided, this is a 75-year-old man with a history of hypercholesterolemia, coronary artery disease, and TIA who now has uncontrolled hypertension despite previously being controlled on an ACE inhibitor and diet. The key piece of information is that his creatinine has increased from 0.54 to 1.2 mgdL, indicating a decline in kidney function. The choices provided include essential hypertension, renal artery stenosis, coarctation of the aorta, pheochromocytoma, and hypothyroidism. Given the acute kidney injury and previous control with an ACE inhibitor, the most likely cause of his hypertension is renal artery stenosis reducing blood flow to the kidneys. Coarctation of the aorta and pheochromocytoma are unlikely in a 75-year-old. Progression of essential hypertension or hypothyroidism would not explain the acute kidney injury.B: Renal artery stenosis 