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
[{'content': "Acute leukemia in children is associated with - all except- \nSelect and explain. \nA. Down's syndrome, B. Klinefelter's syndrome, C. Marfan's syndrome, D. Turner's syndrome", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Marfan's syndrome", 'role': 'assistant'}]