A 5-year-old girl presents with recurrent wheeze triggered by viral infections. She has had three episodes requiring oral steroids in the past year. According to Canadian asthma guidelines, what controller therapy is indicated?AShort-acting salbutamol as needed onlyBRegular low-dose inhaled corticosteroidCLeukotriene receptor antagonist aloneDNo controller; oral steroids during exacerbations onlyEHigh-dose inhaled corticosteroids intermittently only during coldsCheck my answer