This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Contraceptives, Subject name: Gynaecology & Obstetrics
[{'content': 'Which of the following is not an abdominal laparoscopic technique for tubal ligation? \nSelect and explain. \nA. Pomeroy, B. Parkland, C. Essure, D. Irving', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans. c, i.e. EssureRef: Williams 23/ed, p698-70lEssure is a permanent intratubal implant inserted trans cervically using hysteroscope, not an abdominal technique for tubal ligation.', 'role': 'assistant'}]