A mother brings her 3-year-old daughter to the Emergency Department because she is having trouble urinating.The child is not feverish.She has otherwise been healthy except for a bout of diarrhea about 10 days ago.Laboratory test results are as follows:

\begin{array}{|l|l|}\hline\text { TEST } & \text { RESULT } \\\hline \text { RBC } & 4.30 \times 10^{12} / \mathrm{L} \text { (moderate schistocytes }\\&\text { present on peripheral blood smear) }\\\hline \text { WBC } & 5.00 \times 10^{9} / \mathrm{L} \\\hline \text { PLT } & 28 \times 10^{9} / \mathrm{L} \\\hline \text { HGB } & 13.0 \mathrm{~g} / \mathrm{dL} \\\hline \text { HCT } & 39 \% \\\hline \text { MCV } & 89 \mathrm{fl} \\\hline \text { MCH } & 28 \mathrm{pg} \\\hline \text { MCHC } & 33 \% \\\hline \text { BUN } & 85 \mathrm{mg} / \mathrm{dL}(\mathrm{RR}: 8-24 \mathrm{mg} / \mathrm{dL}) \\\hline \text { CREAT } & 3.3 \mathrm{mg} / \mathrm{dL}(\mathrm{RR}: 0.2-1.3 \mathrm{mg} / \mathrm{dL})\\\hline\end{array}

Based on the history and the laboratory results, what is the most likely diagnosis?
A)DIC
B)Bartonella sp.infection
C)HUS
D)Previous Clostridium sp.infection

A Patient Presented with Fever, Mild Anemia, and Thrombocytopenia

Multiple Choice

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