A nurse is caring for a client who has a cerebrospinal fluid infection with gram-negative bacteria. Which of the following cephalosporins should the nurse expect to administer via the intravenous (IV) route to treat this infection?

A. Correct: Cefepime is a fourth-generation cephalosporin that is highly effective against gram-negative bacteria and can penetrate the blood-brain barrier to treat meningitis and other CNS infections. B. Incorrect: Isoniazid is used for tuberculosis, not for gram-negative bacterial infections. C. Incorrect: Acyclovir is an antiviral, not an antibiotic. D. Incorrect: Metoprolol is a beta-blocker used for hypertension and cardiac conditions, not for infections.