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': "Which of the following IUCD's has a life span of 10 years? \nSelect and explain. \nA. Cu T 200, B. Cu T 380A, C. NOVA - T, D. Multiload", 'role': 'user'}, {'content': 'Answer: B \nExplanation: Cu T 380A is a hormone containing IUD. It has a 380mm2 surface area of copper wire wound around the stem and copper sleeves on the horizontal arms. It has a life span of 10 years. Ref: Textbook of gynecology by D C Dutta 4th Edition, Page 440.', 'role': 'assistant'}]