This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anti-Cancer, Subject name: Pharmacology
[{'content': 'Drug of choice for CML: \nSelect and explain. \nA. Imatinib, B. Cisplatin, C. Methotrexate, D. Tamoxifen', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. A. ImatinibImatinib is drug of choice of chronic myeloid leukemia. Cisplatin is given for ovarian cancer. Methotrexate is given for testicular cancer or carcinoma cervix. Tamoxifen is given for breast cancer.', 'role': 'assistant'}]