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. Discarding excess medication with a witness is necessary as the medication cannot be saved or reused. B. Morphine is a controlled substance, and administering a partial dose and saving the rest for later use may lead to potential errors, diversion, or contamination of the remaining medication. C. While excess medication should be disposed of properly, it is not necessary to dispose of the entire in the sharp’s container. Only the container itself should go to the sharp’s container. D. The nurse should not administer the full prescribed dose of morphine from the prefilled syringe as that is an overdose as it can lead to respiratory depression.