A 35-year-old woman suddenly develops generalised urticaria, facial swelling, wheeze and hypotension shortly after receiving intravenous Ceftriaxone. What is the most appropriate immediate treatment?AIntravenous ChlorphenamineBIntravenous Hydrocortisone onlyCIntramuscular Adrenaline 0.5 mg of 1:1000 into the anterolateral thighDNebulised Salbutamol onlyEOral CetirizineCheck my answer