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': 'True about CLL is -a) Can present as acute leukaemiab) Diagnosed in routine blood testc) Leukocytosisd) More T lymphocytes seen \nSelect and explain. \nA. bc, B. c, C. ac, D. ad', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]