A 3-year-old boy presents with a barking cough, inspiratory stridor when agitated and hoarse voice. He is afebrile with SpO2 97% in room air and mild chest wall retraction. What is the MOST appropriate management?AUrgent intubation in theatreBNebulised adrenaline and ICU admission for all casesCSingle dose oral dexamethasone and observation, with discharge if stableDStart broad-spectrum IV antibiotics for bacterial tracheitisEImmediate ENT referral for bronchoscopyCheck my answer