The nurse documents the blood pressure on a client to be 158/94 mm Hg when lying in bed, 13 mm Hg when sitting in a chair, and 98/60 mm Hg when standing. The nurse should recognize which of the following as the evaluation of this?

B These readings are a normal response and attributable to changes in the client's position A The change in blood pressure readings is known as orthostatic hypotension C The change in blood pressure readings is known as orthostatic hypertension D The change in blood pressure readings is considered normal for the client's age