A 14-Year-Old Female Patient Has Been Treated for Asthma for Almost

A 14-year-old female patient has been treated for asthma for almost 4 months.Two weeks ago,she was given salmeterol (Serevent) as part of her medication regimen.However,her mother has called the clinic to report that it does not seem to work when her daughter is experiencing acute symptoms.Which of the following is the nurse's best response to the patient's mother?

A) It takes time for a therapeutic response to develop.
B) She is too young for this particular medication;it should be changed.
C) She should take up to two puffs every 4 hours to ensure adequate blood levels.
D) Salmeterol is indicated for prevention of bronchospasms and is not to be used for relief of acute symptoms.