A 19-year-old man presents with progressive ascending weakness over 3 days following a diarrhoeal illness. Reflexes are absent. Respiratory rate is 24/min, vital capacity is reduced. What is the most appropriate management?AReassure and discharge with physiotherapyBStart high-dose steroids aloneCAdmit for monitoring of respiratory function and start IV immunoglobulin or plasma exchange after neurology reviewDStart long-term oral antibioticsEGive thrombolysisCheck my answer