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': "Hemolytic Uremic Syndrome is characterizeda) Microangiopathic haemolytic anaemiab) ↓ed LDHc) Thrombocytopaeniad) Renal failuree) Positive Coomb's test \nSelect and explain. \nA. abc, B. ad, C. bc, D. acd", 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]