A client reports a 2-day history of fever, vomiting, and diarrhea. The healthcare provider prescribes serum electrolyte levels to be obtained. Which laboratory results should the nurse expect?

Serum potassium 5.0 me/L (5.0 mmol/L), serum sodium 138 me/L (138 mmol/L).

Serum potassium 4.5 me/L (4.5 mmol/L), serum sodium 140 me/L (140 mmol/L).

Serum potassium 3.5 me/L (3.5 mmol/L), serum sodium 142 me/L (142 mmol/L).

Serum potassium 3.0 me/L (3.0 mmol/L), serum sodium 149 me/L (149 mmol/L).