This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Blood Vessels, Subject name: Pathology
[{'content': 'Characteristic pathologic feature in malignant hypertension is:(1988) \nSelect and explain. \nA. Fibrinoid necrosis, B. Papillary necrosis, C. Glomerulosclerosis, D. Focal glomerulonephritis', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans: a (Fibrinoid necrosis)Ref: Robbin's, 7thed, p. 530 & 6,hed, p. 515", 'role': 'assistant'}]