A nurse is preparing to test a client's plantar Babinski reflex. Which of the following instructions should the nurse give to prepare the client for this test?
A. "Place your foot in my hand and I will tap the back of your heel."
B. Initiate contact precautions for the client.
C. "Sit on the edge of the bed while I tap your knee."
D. "Relax your arm across your chest and I will test your elbow extension."