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
Ward Mayo's operation is indicated in : 
Select and explain. 
A. Carcinoma uteus, B. Nullipara prolapse, C. Procidentia, D. Carcinoma cervix
C: Procidentia
Answer: C: Procidentia 
Explanation: Procidentia