The nurse is observing a client who is learning to perform Buerger-Allen exercises. The nurse knows that the client is performing these exercises correctly when the client is observed doing what?

D Elevating the legs, then dangling them, and then lying flat for three minutes in each position A Alternately dorsiflexing and plantar flexing the feet while the legs are elevated C Alternately walking short distances and resting with the legs elevated B Massaging the legs beginning at the feet and moving toward the heart