A Client Has a Serum Potassium Level of 6

A client has a serum potassium level of 6.5 mmol/L,a serum creatinine level of 2 mg/dL,and a urine output of 350 mL/day.What is the best action by the nurse?

A) Place the client on a cardiac monitor immediately.
B) Teach the client to limit high-potassium foods.
C) Continue to monitor the client's intake and output.
D) Ask to have the laboratory redraw the blood specimen.