The Nurse Instructs the Client Who Has a New Prescription

The nurse instructs the client who has a new prescription for cromolyn sodium (NasalCrom) that the most effective administration schedule is

A) at the start of allergy season, with once-a-day dosing.
B) just after manifestations begin, with twice daily dosing.
C) 1 week before allergy season begins, with four to six doses per day.
D) when manifestations peak only, with two or three doses per day.