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': "Evan's syndome refers to presence of which of the following hematologic changes? \nSelect and explain. \nA. Autoimmune thrombocytopenia in autoimmune hemolytic anemia, B. DIC in autoimmune hemolytic anemia, C. Thrombocytopenia in hairy cell leukemia, D. Thrombocytosis in autoimmune hemolytic anemia", 'role': 'user'}, {'content': "Answer: A \nExplanation: Some cases of autoimmune hemolytic anemia can be associated with autoimmune thrombocytopenia, known as Evan's syndrome. Ref: Harrison's principles of internal medicine, 18th edition, Page 881.", 'role': 'assistant'}]