Review Question - QID 104067

A 62-year-old woman presents to the emergency department endorsing 2-3 days of increased dyspnea. Her past medical history is notable for ischemic cardiomyopathy as well as heart failure with reduced ejection fraction, last estimated to be 31%. She also has diabetes mellitus type 2, hypertension, and hyperlipidemia. She reports recent dietary indiscretions, consuming salty foods, and medication noncompliance. Vital signs are as follows: T 98.9, HR 87, BP 144/78, RR 20, and SpO2 of 93% on room air. She is well-appearing but noticeably laboring to breathe. Pulmonary examination reveals bilateral crackles, and she has edema in her lower extremities, which are warm. A chest radiograph is shown in Figure A. The medication indicated for her presentation belongs to which of the following classes?