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 has the least risk of ectopic pregnancy? \nSelect and explain. \nA. Tubectomy, B. OC pills, C. Copper T, D. Condoms', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Condoms REF: Dutta obs 6th e p. 179-180 Condoms and diaphragms are protective for Ectopic pregnancy Risk factors for ectopic pregnancy Pelvic infections/present salphingitis Contraceptives: progestase > copper t IVF/ ovulation inducers Previous ectopic Endometriosis Fibroids Developmental defects of the tube Transperitoneal ovum migration Salphingits icthmica nodosum Cigarette smoking > 20 / day Multiple paners Intercourse before 18 yrs In utero DES exposure Age> 40 yrs Tubal surgeries Tubal sterilization (greatest risk within 2 yrs.) (Condoms and diaphragms are protective)', 'role': 'assistant'}]