A Patient Has Been Taking Furosemide 80 Mg Once Daily

A patient has been taking furosemide 80 mg once daily for 4 weeks and returns for a follow-up visit.The primary care NP notes a blood pressure of 100/60 mm Hg.The patient's lungs are clear,and there is no peripheral edema.The patient's serum potassium is 3.4 mEq/L.The NP should:

A) continue furosemide at the current dose.
B) decrease furosemide to 60 mg once daily.
C) increase furosemide to 80 mg twice daily.
D) change furosemide dose the 40 mg twice daily.