This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diabetes, Subject name: Pathology
[{'content': 'Most characteristic feature of diabetic nephropathy: \nSelect and explain. \nA. Kimmelstein Wilson change, B. Armani Ebstein change, C. Focal segmental glomerulosclerosis, D. Membrano proliferative glomerulonephritis', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Features of diabetic nephropathy are: - Glomerular lesions like Capillary basement membrane thickening - Earliest & most common change in DM Diffuse mesangial sclerosis - presents as nephrotic syndrome in severe cases Nodular glomerulosclerosis aka Kimmelstiel-Wilson lesion - Pathognomonic of diabetes -Renal vascular lesions, principally aeriolosclerosis -Pyelonephritis, including necrotizing papillitis.', 'role': 'assistant'}]