A client on prolonged bed rest has develop
题型：单项选择题
问题：
A client on prolonged bed rest has developed a pressure ulcer. The wound shows no signs of healing even though the client has received skin care and has been turned every 2 hours. Which factor is most likely responsible for the failure to （）
A. Inadequate vitamin D intake.
B. Inadequate protein intake.
C. Inadequate massaging of the affected area.
D. Low calcium level.
