A 19-year-old university student presents to the emergency department with fever, severe headache, photophobia and a non-blanching petechial rash. He is hypotensive and tachycardic. What is the most appropriate immediate antibiotic treatment?AOral amoxicillin in the waiting roomBIntravenous benzylpenicillin and ceftriaxone as soon as possibleCIntravenous vancomycin aloneDDelay antibiotics until lumbar punctureEIntravenous acyclovir onlyCheck my answer