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: Pathology
[{'content': "Which of the following is not associated with malignancy - \nSelect and explain. \nA. Fragile X syndrome, B. Fanconi's syndrome, C. Down's syndrome, D. Bloom syndrome", 'role': 'user'}, {'content': 'Answer: A \nExplanation: Down syndrome is associated with incrased risk of leukemia. _____ Harrison', 'role': 'assistant'}]