The nurse is delivering the client's 10 AM medications. The client is away from his room for a diagnostic study. Which action is the most appropriate for the nurse to take ？（）
A．Leave the medications on the client's bedside table.
B．Ask the client's roommate to keep the medications for the client until he returns.
C．Lock the medications in the medicine preparation area until the client returns.
D．Have the client skip that dose of medication.
