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
[{'content': 'Method of sterilization least suited for Recanalisation is : \nSelect and explain. \nA. Clips, B. Bipolar cauterization, C. Fallopian rings, D. Pomeroys technique', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Fallopian rings', 'role': 'assistant'}]