A 27-year-old man is found unresponsive with pinpoint pupils and shallow respirations after reportedly taking heroin. RR is 6/min and SpO2 is 84% on air. What is the most appropriate immediate treatment after basic airway and breathing support?AIntravenous naloxoneBIntravenous flumazenilCIntravenous diazepamDOral activated charcoal onlyEObservation with oxygen aloneCheck my answer