Which of the following drugs is a non-potassium-sparing diuretic for a child with a cardiac condition?

A. Captopril is an ACE inhibitor, not a diuretic. It is used to treat hypertension and heart failure by lowering blood pressure and reducing afterload. B. Spironolactone is a potassium-sparing diuretic, meaning it helps the body eliminate fluid without causing potassium loss. C. Chlorothiazide is a thiazide diuretic and can cause some potassium loss, but it is generally less potent than loop diuretics like furosemide. D. Furosemide (Lasix/LSK) is a loop diuretic and a non–potassium-sparing diuretic. It is commonly used in children with cardiac conditions to reduce fluid overload but requires careful monitoring of electrolytes, especially potassium, due to the risk of hypokalemia.