A 3-year-old boy presents with barking cough, hoarse voice and inspiratory stridor. He has mild intercostal recession but is not hypoxic and is able to drink. What is the most appropriate initial treatment?ANebulised Adrenaline onlyBHigh-dose oral Dexamethasone or PrednisoloneCBroad-spectrum intravenous antibioticsDImmediate intubation and ventilationENo treatment and discharge without adviceCheck my answer