A Client Is on Strict Bed Rest Following Hip Surgery

A client is on strict bed rest following hip surgery.What nursing intervention would support vascular health?

A) Place pillows under the unaffected knee for support.
B) Position the bed to flex the knees at least 20 degrees.
C) Have the client alternately flex and extend the feet several times a day.
D) Keep the client in a prone position for at least 20 minutes twice a day.