When Teaching the Patient with Allergic Rhinitis About Management of the Condition

When teaching the patient with allergic rhinitis about management of the condition, the nurse explains that

A) identification and avoidance of triggers are the best way to avoid allergic reactions.
B) use of oral antihistamines for a few weeks before the allergy season may prevent reactions.
C) corticosteroid nasal sprays will reduce inflammation, but systemic effects limit their use.
D) OTC antihistamines cause sedation, so prescription antihistamines are usually ordered.