A 19-year-old woman presents 10 hours after ingesting 20 tablets of 500 mg paracetamol in a suicide attempt. She is asymptomatic. According to UK guidance, what is the most appropriate next step?AReassure and discharge as she is asymptomaticBCheck serum paracetamol level and use the treatment nomogram to determine need for N-acetylcysteineCGive activated charcoal aloneDStart N-acetylcysteine only if liver function tests are derangedEAdmit for observation only with no blood testsCheck my answer