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: Social & Preventive Medicine
[{'content': 'Absolute contraindication to intra-uterine device is: \nSelect and explain. \nA. Anaemia, B. History of ectopic pregnancy, C. History of pelvic inflammatory disease, D. None of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Absolute contraindications to intra uterine devices are: History of ectopic pregnancy Suspected pregnancy Pelvic inflammatory disease Vaginal bleeding of unknown etiology Cancer of cervix, uterus, adnexa and other pelvic tumours Ref: Park, 22nd edition pg: 449;Park 21st Ed Page 460.', 'role': 'assistant'}]