The healthcare provider prescribes ear drops to an adult client with an ear infection. Which teaching should the nurse provide?

A. Pulling the pinnae up and back helps straighten the ear canal in adults, allowing easier administration of the ear drops and better penetration into the ear canal. This technique is appropriate for adults. B. Administering the drops with the head held upright may be necessary for some ear drop medications, but it is not the most appropriate technique for all types of ear drops. C. Cooling and shaking the bottle before administering the drops may be necessary for certain types of medications but is not universally recommended for all ear drop preparations. D. Inserting the tip of the dropper into the canal of the ear is appropriate for administering ear drops, but it should be accompanied by the correct technique of pulling the pinnae up and back to straighten the ear canal in adults.