This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Pediatrics
A 4-year-old child presented with decreased urine output for last 20 hours & petechial spots over the body. There was a history of diarrhea 2 weeks prior to this. Blood investigations revealed a Hb level of 7 g/dl, TLC 11,800/mm3, Platelet count of 35,000/mm3. His peripheral smear findings are shown belowWhat is the diagnosis? 
Select and explain. 
A. Malaria, B. Idiopathic thrombocytopenic purpura, C. Acute tubular necrosis, D. Hemolytic uremic syndrome
D: Hemolytic uremic syndrome
Answer: D: Hemolytic uremic syndrome 
Explanation: Ans d. Hemolytic uremicPeripheral smear showing schistocytes in a child with oliguria, thrombocytopenia & a history of recent syndrome diarrhea suggest a diagnosis of Hemolytic uremic syndrome