The Nurse Hangs an Intermittent Intravenous Medication That Is Given

The nurse hangs an intermittent intravenous medication that is given every 6 hours using a secondary set.When the nurse returns to assess the IV,the last drop of fluid infuses from the secondary set.Which action by the nurse is the most appropriate?

A) Restart the primary IV infusion by unclamping the roller clamp for the primary tubing.
B) Disconnect the secondary set tubing and discard it.
C) Assess that the primary IV is running at the proper rate.
D) Lower the primary IV bag to the proper height.