An Older Patient Receiving Iso-Osmolar Continuous Tube Feedings Develops Restlessness,agitation,and

An older patient receiving iso-osmolar continuous tube feedings develops restlessness,agitation,and weakness. Which laboratory result should the nurse report to the health care provider immediately?

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) PO₄^-3 4.8 mg/dL (1.55 mmol/L)