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
Sterilization is commonly performed at which site of fallopian tube : 
Select and explain. 
A. Ampulla, B. Infundibulum, C. Isthmus, D. Cornua
C: Isthmus
Answer: C: Isthmus 
Explanation: Ans. is c i.e. Isthmus