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
All are associated with malignancy except 
Select and explain. 
A. Down's syndrome, B. Bloom syndrome, C. Fragile - X syndrome, D. Fanconi's anaemia
C: Fragile - X syndrome
Answer: C: Fragile - X syndrome 
Explanation: Disorder
Tumour 


Down syndrome
AML M7, ALL


Bloom syndrome 
Leukemia, lymphma


Fanconi's anaemia 
Leukemia, myelodysplastic syndrome