【单选题】

A client is receiving an IV infusion of dextrose 5% in water and lactated Ringer's solution at 125 mL/hr to treat a fluid volume deficit. Which of these signs indicates a need for additional IV fluids
A．Serum sodium level of 125 mEq/L.

B．Temperature of 99.6 °F(37.6℃).
C．Neck vein distention.
D．Dark amber urine.