During a Clinic Interview, a Client States He Has Been

During a clinic interview, a client states he has been experiencing dizziness upon standing. Which nursing action is appropriate for the nurse to implement?

A) Ask the client when in the day dizziness occurs.
B) Help the client to assume the Trendelenburg position.
C) Take both heart rate and blood pressure with the client standing.
D) Measure vital signs with the client supine, sitting, and standing.