This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': "All of the following statements are true about Hemolytic uremic syndrome except \nSelect and explain. \nA. Uraemia, B. Hypofibrinogenemia, C. Thrombocytopenia, D. Positive coomb's test", 'role': 'user'}, {'content': "Answer: D \nExplanation: Answer is D (Positive coomb's test): Coomb's test is negative in HUS Laboratory findings in HUS - CMDT 2002 / 556 Anemia: - Microangiopathic hemolytic - Red blood cell fragmentation on peripheral smear - Helmet cells / Burr cells Thrombocytopenia WBC counts rise (Nelson le/ 1587) LDH levels are elevated out of propoion to degree of hemolysis Coomb's test is negative Tests of coagulation are normal (exclude DIC) with the exception of -- elevated fibrin degradation products (explains hypofibrinogenemia)", 'role': 'assistant'}]