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': 'IUCD with shoest life span : \nSelect and explain. \nA. Lippes loop, B. Copper - T, C. Multiload device, D. Progestase', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Progestase', 'role': 'assistant'}]