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': 'The following statements are true about Intra uterine devices (IUD) except \nSelect and explain. \nA. The pregnancy rate of Lippes loop and Cu- T 200 are similar, B. Multiload Cu-375 is a third generation IUD, C. IUD can be used for Emergency Contraception within 5 days, D. Levonorgestrel releasing IUD has an effective life of 10 years', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]