A nurse is caring for a client who has a prescription for morphine 4 mg IM stat. The medication is dispensed in a 5 mg/mL prefilled syringe. Which of the following actions should the nurse take?

A. Dispose of the excess medication in the sharps container: Medication should not be disposed of in sharps containers; proper protocols must be followed. B. Give the full contents of the prefilled syringe: Administering more than the prescribed dose can lead to overdose and adverse effects. C. Discard the excess medication with a second nurse as a witness: Controlled substances, such as morphine, require a witness for proper disposal of unused portions. D. Inject the prescribed dose and save the rest for later use: Leftover medication should never be saved for later, as this violates safety protocols and poses legal risks.