A 3-year-old child presents with a barking cough, hoarse voice and inspiratory stridor at rest. He is febrile but maintaining oxygen saturations at 95% on air and is not agitated. What is the most appropriate initial treatment?ANebulised Adrenaline aloneBOral Dexamethasone as a single doseCIntravenous broad-spectrum antibioticsDHeliox in all casesEImmediate intubation and ventilationCheck my answer