A 55-year-old patient is semi-conscious, restless, and has tremors and muscle weakness. Physical assessment reveals a dry tongue, elevated temperature, and urine specific gravity of 1.037. The nurse knows that the serum sodium value for this patient is most likely to be which of the following?
a. 115 mEq/L
b. 125 mEq/L
c. 135 mEq/L
d. 155 mEq/L