A nurse receives their client care assignment. Following the report, they should give priority assessment to the client:

A. Sodium 135 mEq/L and potassium 3.7 mEq/L are within normal limits, so this client is stable. B. Sodium 110 mEq/L (hyponatremia) and potassium 2.0 mEq/L (hypokalemia) are critically abnormal values and can lead to serious complications such as seizures, cardiac arrhythmias, and muscle weakness. This client requires immediate assessment and intervention. C. Mild pain from urolithiasis is concerning but not as urgent as electrolyte imbalances. D. Pinkish mucus discharge in an ileal conduit is expected and generally not urgent unless accompanied by other signs of infection.