A 34-year-old woman with known peanut allergy collapses in a restaurant after eating dessert. She has widespread urticaria, wheeze, stridor, and hypotension. What is the single most important immediate treatment?AChlorphenamine intravenouslyBHydrocortisone intravenouslyCSalbutamol nebuliserDAdrenaline 1 in 1000 intramuscularly in the anterolateral thighEIV normal saline onlyCheck my answer