A 7-year-old girl with a history of recurrent wheeze presents with acute severe asthma exacerbation: she is speaking in single words, RR 36, accessory muscle use, oxygen saturation 90% on room air. What is the most appropriate immediate management?AOral salbutamol and dischargeBNebulised salbutamol and ipratropium plus systemic corticosteroids and supplemental oxygenCStart antibiotics for presumed pneumoniaDUse only systemic corticosteroids without bronchodilatorsEObserve without treatmentCheck my answer