A 4-year-old boy presents with barking cough, inspiratory stridor at rest and moderate respiratory distress. He has a low-grade fever and no drooling. What is the most appropriate initial treatment?ANebulised adrenaline and oral dexamethasoneBHigh-dose intravenous antibioticsCImmediate endotracheal intubation in all casesDOral dexamethasone aloneENebulised salbutamol onlyCheck my answer