A Primary Care NP Is Evaluating a Patient Who Has

A primary care NP is evaluating a patient who has COPD.The patient uses a LABA twice daily.The patient reports having increased exertional dyspnea,a frequent cough,and poor sleep.The patient also uses a short-acting b-adrenergic agonist (SABA) five or six times each day.Pulse oximetry reveals an oxygen saturation of 92%.The patient's FEV₁/forced vital capacity is 65,and FEV1 is 55% of predicted.The NP should prescribe a(n) :

A) oral corticosteroid.
B) long-acting anticholinergic.
C) long-acting oral theophylline.
D) combination ICS/LABA inhaler.