When administering an antibiotic otic solution to a client, it is important for the nurse to:

A. The solution should be warmed to near body temperature (not 100°C, which would cause burns) to prevent dizziness. B. Occluding the tragus is done to help medication enter the ear canal, not to prevent absorption. C. Confirming the tympanic membrane is intact prevents introduction of medication into the middle ear, which can cause damage or infection if ruptured. D. For adults, the pinna is pulled upward and backward, not down and outward (which is done for children under 3).