In Evaluating a Client's Blood Pressure (BP) for Hypertension, It

In evaluating a client's blood pressure (BP) for hypertension, it would be most important for the nurse to take which action?

A) Use the same type of manometer each time.
B) Auscultate all five Korotkoff sounds.
C) Measure BP in both arms.
D) Monitor BP for a pattern.