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': 'The highest incidence of ectopic pregnancy amongst contraceptive users is observed with : \nSelect and explain. \nA. Combined contraceptive pills, B. Cu-T intrauterine contraceptive device, C. Progestase intrauterine device, D. Lippes loop intrauterine device', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Progestase intrauterine device', 'role': 'assistant'}]