A 19-year-old woman presents 4 hours after ingesting 20 g of paracetamol in a suicide attempt. She is currently asymptomatic. According to Australian paracetamol poisoning guidelines, what is the most appropriate next step?AReassure because she is asymptomaticBWait 24 hours before checking any blood testsCMeasure serum paracetamol concentration at 4 hours post-ingestion and use the treatment nomogram to decide on N-acetylcysteineDStart activated charcoal only, no blood tests are neededEStart haemodialysis immediatelyCheck my answer