This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Miscellaneous (Neoplasia), Subject name: Surgery
In old age for rectal prolapse palliative surgery in a patient unfit for surgery is - 
Select and explain. 
A. Delorme's procedure, B. Well's procedure, C. Thiersch's operation, D. Low anterior resection
C: Thiersch's operation
Answer: C: Thiersch's operation 
Explanation: Ans. is 'c' i.e., Thiersch's operation