A Child Who Has Otitis Externa Has Severe Swelling of the External

A child who has otitis externa has severe swelling of the external auditory canal
that persists after 2 days of therapy with ototopical antibiotic/corticosteroid drops. What is the next step in treatment for this child?

A) Insert a wick into the external auditory canal.
B) Irrigate the external auditory canal with saline.
C) Order systemic corticosteroids.
D) Prescribe an oral antibiotic medication.