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': 'The characteristic finding in diabetic nephropathy is - \nSelect and explain. \nA. Diffuse glomerulosclerosis, B. Nodular glomerulosclerosis, C. Armani - Ebstein reaction, D. Fibrin caps', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]