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': 'Highest risk of ectopic pregnancy is associated with : \nSelect and explain. \nA. Pelvic inflammatory disease, B. Tubal endometriosis, C. Intrauterine contraceptive device, D. Broad ligament tumours', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Pelvic inflammatory disease', 'role': 'assistant'}]