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: Pharmacology
[{'content': 'DOC for CML is : \nSelect and explain. \nA. Crizotinib, B. Ibrutinib, C. Imatinib, D. Gilterinib', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Imatinib is a BCR - ABL tyrosine kinase inhibitor, which is the drug of choice for CML(Chronic myeloid Leukemia).', 'role': 'assistant'}]