A 9-year-old boy with known asthma has daytime symptoms more than twice per week and nocturnal symptoms twice per month despite using low-dose inhaled corticosteroid. What is the most appropriate next step in controller therapy?AIncrease inhaled corticosteroid dose or add a long-acting beta-agonistBAdd oral theophyllineCStop inhaled corticosteroid and use SABA onlyDUse montelukast monotherapy without inhaled corticosteroidENo change in therapyCheck my answer