The nurse has taught the parents of a baby girl client who has congestive heart failure (CHF) about drug therapy and digoxin (Lanoxin) and furosemide (Lasix). The nurse concludes that the parents learned the information when one parent makes which statement about furosemide? A. ""It is given because our baby has a kidney defect."" B. ""It helps her heart by reducing the amount of water in her system."" C. ""It prevents the digoxin from becoming toxic."" D. ""It keeps the potassium levels in her body from getting too high.""