<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 5-year-old girl is brought to the emergency department because of abdominal pain, vomiting, and diarrhea for 6 days. Her mother says that over the last 24 hours she has developed a rash and has been urinating less frequently than usual. One month ago, she had a 3-day episode of high fever and sore throat that subsided without medical treatment. She appears weak. Her temperature is 37.7C 99.8F, pulse is 120min, respirations are 28min, and blood pressure is 11472 mm Hg. Examination shows petechiae on the trunk and jaundice of the skin. The abdomen is diffusely tender with no peritoneal signs. Neurological examination shows no abnormalities. Laboratory studies show:Hemoglobin 8 gdLMean corpuscular volume 85 μm3Leukocyte count 16,200mm3Platelet count 38,000mm3SerumBlood urea nitrogen 43 mgdLCreatinine 2.9 mgdLpH 7.0Urine dipstick is positive for blood and protein. A blood smear shows schistocytes and normochromic, normocytic cells. In addition to supportive treatment, which of the following is the most appropriate next step in management of this patient?? A: Diazepam therapy, B: Red blood cell transfusions, C: Platelet transfusion, D: Levofloxacin therapy, E: Hemodialysis,  <response>: This is a clinical case of a 5-year-old girl presenting with abdominal pain, vomiting, diarrhea, rash, decreased urination, weakness, fever, tachycardia, tachypnea, hypertension, petechiae, jaundice, abdominal tenderness, anemia, thrombocytopenia, leukocytosis, acute kidney injury with metabolic acidosis, and schistocytes on blood smear. The history of fever and sore throat 1 month ago suggests a preceding viral infection. The constellation of current symptoms, labs, and blood smear findings are consistent with hemolytic uremic syndrome HUS, a type of thrombotic microangiopathy that can be triggered by infections and leads to microangiopathic hemolytic anemia, thrombocytopenia, and acute kidney injury. Of the choices given, hemodialysis is the most appropriate next step in management. HUS patients often require hemodialysis for severe acute kidney injury and fluid overload. Diazepam, red blood cell transfusion, platelet transfusion, and antibiotics are not indicated in HUS with stable vital signs.E: Hemodialysis 