What is the best nursing practice for administering a controlled substance if part of the medication must be discarded?
A. The nurse documents on the medication administration record.
B. The nurse discards the unused portion and documents on the control inventory form.
C. The nurse does not discard any controlled substance to prevent environmental contamination.
D. The nurse documents on the medication administration record and the control inventory form, and has a second nurse witness the medication being discarded.
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