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': 'In which leukemia, autoimmune hemolytic anemia is most common \nSelect and explain. \nA. ALL, B. AML, C. CMIL, D. CLL', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]