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': 'IUCD most commonly associated with expulsion \nSelect and explain. \nA. Lippes loop, B. Cu T - 200, C. Cu T - 380 A, D. LNG - IUCD', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The expulsion rate among IUCDs is high for lippes loop (12-20% ) Expulsion can be paial or complete Expulsion usually occurs during the first few weeks following inseion or during menstruation Reference: Park&;s textbook of preventive and social medicine, 23rd edition, Page no: 497, 499', 'role': 'assistant'}]