This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Non communicable diseases, Subject name: Social & Preventive Medicine
[{'content': "Which of the following is 2nd generation IUD- \nSelect and explain. \nA. Progestase, B. Mirena, C. CuT-200, D. Lippe's loop", 'role': 'user'}, {'content': "Answer: C \nExplanation: park's textbook of preventive and social medicine 23rd edition. *copper bearing devices are under second generation :CuT 200,CuT 220C, CuT 380A ,ML-Cu-250,ML-Cu-375.", 'role': 'assistant'}]