The Patient Most at Risk for a Pressure Ulcer Would

The patient most at risk for a pressure ulcer would be:

A) a 46-year-old man in traction for a fractured femur, who exercised regularly before his accident and is alert and oriented.
B) a 54-year-old overweight man who is unconscious from a stroke, has a urinary catheter in place, and has been incontinent of liquid stool since a feeding tube was placed.
C) a 72-year-old man admitted for elective surgery to replace his hip joint, who was an avid bowler and gardener before his hip disease slowed him down.
D) an 84-year-old man with Alzheimer's disease who is pacing in the halls and who is incontinent of urine if not toileted every 2 hours.