A 78-year-old man is brought to the emergency department with confusion and seizures. Serum sodium is 108 mmol/L. Symptoms began within the last 12 hours. What is the most appropriate initial management of his hyponatraemia?AFluid restriction aloneBRapid correction with hypertonic saline aiming to normalise sodium within 6 hoursCAdminister 100 mL boluses of 3% saline to raise serum sodium by 4-6 mmol/L, with close monitoringDAdminister isotonic 0.9% saline at 30 mL/kg over 1 hourENo treatment; the seizures will self-resolveCheck my answer