A 40-year-old man presents with generalised urticaria, facial swelling, hoarse voice and wheeze after a bee sting. His blood pressure is 85/50 mmHg and he is tachycardic. What is the most appropriate immediate treatment?AIntravenous Hydrocortisone 100 mgBOral Chlorphenamine 4 mgCIntramuscular Adrenaline 500 micrograms into the anterolateral thighDNebulised Salbutamol onlyEIntravenous 0.9% sodium chloride onlyCheck my answer