A 2-year-old girl presents with a barking cough, inspiratory stridor and hoarse voice. She is mildly tachypnoeic but has no sternal recession at rest. SpO₂ is 97% on room air. What is the most appropriate treatment?AImmediate intubation and ICU admissionBOral prednisolone or single dose dexamethasoneCBroad-spectrum IV antibioticsDSalbutamol via spacerENo treatment requiredCheck my answer