A 23-year-old with moderate persistent asthma has had three exacerbations in the past year despite low-dose inhaled corticosteroid plus as-needed SABA. According to U.S. focused updates, which controller strategy is preferred?ASwitch to single-inhaler ICS-formoterol used for both maintenance and reliever therapy (SMART)BIncrease SABA frequency at symptom onsetCAdd long-acting muscarinic antagonist as rescue therapyDStart nightly theophyllineEChronic daily oral prednisone 10 mgCheck my answer