<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 74-year-old man presents to the clinic for a routine health checkup. He has been hypertensive for the past 20 years, and he has had congestive heart failure for the past 2 years. He is currently on captopril and claims to be compliant with his medication. His most recent echocardiogram report shows that his ejection fraction has been decreasing, so the physician decides to add spironolactone to his drug regimen. Which of the following complications should be most closely monitored for in this patient?? A: Hyperkalemia, B: Gynecomastia, C: Azotemia, D: Alkalosis, E: Hypernatremia,  <response>: This is a clinical reasoning question involving the addition of a new medication spironolactone to a patients regimen and identifying potential side effects or complications that should be monitored. The key details in the stem are that the patient is elderly, has long-standing hypertension and congestive heart failure, and is now starting on spironolactone. Spironolactone is an aldosterone antagonist diuretic used in heart failure to reduce fluid overload. Common side effects include hyperkalemia due to its potassium-sparing properties. Gynecomastia can also occur due to anti-androgen effects. The other options are less likely complications of spironolactone in this clinical scenario.A: Hyperkalemia 