Following an Automobile Accident, a Teenager Is Left Paraplegic

Following an automobile accident, a teenager is left paraplegic. The child is being prepared for discharge. The nurse is reviewing instructions to avoid decubitus ulcers on the buttocks and instructs the teenager to:

A) Contract the buttock muscles five times every two hours.
B) Increase fat in the diet to provide a protective coating over the boney prominences.
C) Do wheelchair push-ups every 15 to 30 minutes.
D) Avoid use of sheepskin as it prevents air from reaching the area.