A Patient Diagnosed with Major Depression Began Taking Escitalopram (Lexapro)5

A patient diagnosed with major depression began taking escitalopram (Lexapro) 5 days ago.The patient now says,"This medicine isn't working." The nurse's best intervention would be to:

A) discuss with the health care provider the need to increase the dose.
B) reassure the patient that the medication will be effective soon.
C) explain the time lag before antidepressants relieve symptoms.
D) critically assess the patient for symptoms of improvement.