This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Presence of decubitus ulcer in prolapse indicates: 
Select and explain. 
A. Infection, B. Malignancy, C. Circulatory disturbances, D. Machanical trauma
C: Circulatory disturbances
Answer: C: Circulatory disturbances 
Explanation: Circulatory disturbances