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: Medicine
[{'content': 'Lepsroy causes ? \nSelect and explain. \nA. Membranous GN, B. Focal glomerulosclerosis, C. Membranoproliferative GN, D. Mesangioproliferative GN', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Membranous GN", 'role': 'assistant'}]