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: Pathology
[{'content': 'Coombs positive hemolytic anemia is associated with \nSelect and explain. \nA. TTP, B. PAN, C. SLE, D. HUS', 'role': 'user'}, {'content': "Answer: C \nExplanation: Amongst the collagen vascular diseases, SLE is most frequently associated with Coomb's positive hemolytic anemia.\nPAN can also cause Coomb's positive hemolytic anemia, but it is very rare.", 'role': 'assistant'}]