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': 'Infant with down syndrome have A/E – a)  VSDb)  Duodenal atrestiac)  Leukaemiad)  Normal intelligencee)  Delayed skeletal maturation \nSelect and explain. \nA. de, B. bc, C. cd, D. bd', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]