A 3-year-old child presents with a barking cough, hoarse voice and inspiratory stridor at rest, but normal oxygen saturations. According to standard paediatric guidelines, what is the most appropriate acute management?AOral antihistamines and dischargeBSingle dose of oral or intramuscular dexamethasone and nebulised adrenaline if significant distress, with observationCImmediate intubation without medical therapyDNo treatment; observe at homeEStart broad-spectrum intravenous antibiotics for presumed bacterial tracheitisCheck my answer