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
Drug of choice for treatment of CML is: 
Select and explain. 
A. Imatinib, B. Hydroxyurea, C. IFN-Alfa, D. Infliximab
A: Imatinib
Answer: A: Imatinib 
Explanation: Answer is A (Imatinib) The drug of choice for drug treatment of CML is Imatinib mesylate.