A Patient Receiving Iso-Osmolar Continuous Tube Feedings Develops Restlessness, Agitation

A patient receiving iso-osmolar continuous tube feedings develops restlessness, agitation, and weakness. The laboratory data that will be of most concern to the nurse is

A) K+ 3.4 mEq/L (3.4 mmol/L) .
B) Ca+2 7.8 mg/dl (1.95 mmol/L) .
C) Na+ 154 mEq/L (154 mmol/L) .
D) HPO4- 3 4.8 mg/dl (1.55 mmol/L) .