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: Pediatrics
CML in children is associated with : 
Select and explain. 
A. Down's syndrome, B. Klinefelter's syndrome, C. Marfan's syndrome, D. Turner's syndrome
A: Down's syndrome
Answer: A: Down's syndrome 
Explanation: Patients with Down syndrome are more prone to develop juvenile type of CML.