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': 'Which of the following procedure isassociated with maximum chance of re-canalization during surgery for reversal of tubal ligation : \nSelect and explain. \nA. lsthumo-isthmic anastomosis, B. Isthumo-ampullary anastomosis, C. Ampullo-ampullary anastomosis, D. Cornual obstruction', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is a i.e. Isthmo-isthmic anastomosis', 'role': 'assistant'}]