This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Demography and family planning, Subject name: Social & Preventive Medicine
[{'content': 'CuT 380A IUCD should be replaced once in - \nSelect and explain. \nA. 4 yrs, B. 6 yrs, C. 8 yrs, D. 10 yrs', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Cu-T- 380A is approved for use for 10 years, but it has been demonstrated to maintain its efficacy over at least 12 years of use Reference : Park&;s textbook of preventive and social medicine, 23rd edition, Page no: 497', 'role': 'assistant'}]