This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chronic Myelogenous Leukemia, Subject name: Pathology
[{'content': 'Which of the following is a characteristic feature of chronic myeloid leukemia (CML)? \nSelect and explain. \nA. Auer rods, B. Basophilia, C. Increased LAP score, D. Bone marrow fibrosis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Characteristic features of CML are massive splenomegaly, hyperleucocytosis, peripheral blood Basophilia & Philadelphia Chromosome/ t(9;22).', 'role': 'assistant'}]