A 2-year-old girl attends with a 24-hour history of barking cough, hoarse voice and inspiratory stridor, worse at night. She is alert with mild chest recession and oxygen saturation 96% on air. What is the most appropriate management?AHumidified air and oral antibioticsBSingle dose of oral DexamethasoneCImmediate intubation and ventilationDOral SalbutamolEHigh-dose oral Prednisolone for 7 daysCheck my answer