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': "Down's syndrome is associated with -a)  Congenital heart diseaseb)  A.L.L.c)  Early onset Alzheimer's diseased) CNS tumoure)  Infection \nSelect and explain. \nA. abce, B. bcde, C. cde, D. acd", 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]