A nurse is reviewing the medication administration record for a client who has cancer and is receiving morphine via a PCA pump. Which of the following prescriptions should the nurse clarify with the provider?

A. Ondansetron is an antiemetic commonly used to prevent nausea and vomiting in clients receiving opioids like morphine. It is safe to use concurrently with morphine and does not require clarification. B. Nalbuphine is an opioid agonist-antagonist that can counteract the effects of morphine and precipitate withdrawal symptoms in clients who are opioid-dependent. It should not be used concurrently with morphine, and the nurse should clarify this prescription with the provider. C. Insulin glargine is a long-acting insulin used to manage blood glucose levels. It does not interact with morphine and is safe to use concurrently. D. Acetaminophen is a non-opioid analgesic that can be used in combination with morphine to enhance pain relief. It does not require clarification.