A nurse is reviewing a client's medication administration record at 1930. The nurse notes that the documentation for the 1700 regular insulin dose is missing. Which of the following is an appropriate action for the nurse to take?

C Contact the previous nurse to determine if the client received the medication. B Ask the client if she received the 1700 medication. D Administer the medication and document the current time. A Request a medication reconciliation form from the pharmacy.