A 35-year-old woman develops sudden generalised urticaria, lip swelling, wheeze and hypotension after an intravenous antibiotic. She weighs 70 kg. What is the most appropriate immediate drug treatment?AIntravenous chlorphenamine 10 mgBIntravenous hydrocortisone 200 mgCIntramuscular adrenaline 0.5 mg of 1 in 1000DSubcutaneous adrenaline 0.3 mg of 1 in 1000ENebulised salbutamol onlyCheck my answer