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: Unknown
[{'content': 'Lifetime for as long as 10 Years is of which IUCD - \nSelect and explain. \nA. Cu T 200, B. Cu 250, C. CuT 380 A, D. Progestasert', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ans-C', 'role': 'assistant'}]