This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Systemic Disorders affecting Glomerulus, Subject name: Pathology
[{'content': 'Kidney biopsy from a child with hemolytic uremic syndrome characteristically most likely presents features of: \nSelect and explain. \nA. Thrombotic microangiopathy, B. Proliferative glomerulonephritis, C. Focal segmental glomerulosclerosis, D. Minimal change disease', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Thrombotic microangiopathy encompasses a spectrum of clinical syndromes that includes TTP and HUS. Insults that lead to excessive activation of platelets, which deposit as thrombi in small blood vessels.', 'role': 'assistant'}]