Which Nursing Action Is Correct When the Nurse Is Assessing

Which nursing action is correct when the nurse is assessing the straight-leg raising test for a patient with back pain?

A) Raise the patient's legs to a 60-degree angle from the bed.
B) Have the patient dangle the legs over the edge of the exam table.
C) Place the patient initially in the prone position on the bed or exam table.
D) Instruct the patient to elevate the legs while tightening the abdominal muscles.