A nurse is preparing to administer erythromycin PO to a client who has an infection. The nurse checks the client's medical record and notes that the client has a severe allergy to penicillin. Which of the following actions should the nurse take?

A. Request a different medication from the provider: Erythromycin is an alternative to penicillin for patients with penicillin allergies and can be administered safely. B. Premedicate the client with diphenhydramine: This is not necessary unless the client has a history of allergic reactions to erythromycin or other antibiotics. C. Administer the medication to the client: Erythromycin is a macrolide antibiotic and is safe for clients who are allergic to penicillin. D. Request a different route of administration from the provider: The route of administration (oral) is appropriate unless there is a specific concern.