Which serum electrolyte value alerts the nurse to the possibility of hyperaldosteronism?

D Serum sodium, 130 mmol/L; serum potassium, 2.5 mmol/L C Serum sodium, 130 mmol/L; serum potassium, 7.5 mmol/L A Serum sodium, 150 mmol/L; serum potassium, 2.5 mmol/L B Serum sodium, 140 mmol/L; serum potassium, 5.0 mmol/L