Dados os conjuntos A={1, 2, -1, 0, 4, 3, 5} e B={-1, 4, 2, 0, 5, 7} assinale a afirmação verdadeira
a) AUB={2,4,0,-1}
b) An (B-A)= conjunto vazio
c) AnB={-1,4,2,0,5,7,3}
d) (AUB) n A={-1,0}
e) Nenhuma das respostas anteriores
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