A Physician Has Changed a Child's Asthma Medication to Salmeterol

A physician has changed a child's asthma medication to salmeterol (Serevent) .The mother asks the nurse what this drug will do.The nurse should explain that salmeterol (Serevent) is used to treat asthma because the drug:

A) Is an anti-inflammatory.
B) Decreases mucus production.
C) Controls allergic rhinitis.
D) Is a bronchodilator.