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': 'Lifespan of Cu-T 380A is: September 2011, March 2013 \nSelect and explain. \nA. 5 years, B. 10 years, C. 15 years, D. 20 years', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. B: 10 years Copper-T 380A known as paraguard has a life span of 10 years Lifespan Progestase: 1 year Cu-T 200B: 4 years Nova T and LNG IUCD: 5 years Cu-T 380A: 10 years', 'role': 'assistant'}]