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List the elements in the set $$A = \{n \in \N \mid n \text{ is a multiple of } 5\}$$

$A = \{1, 2, 3, 5\}$
$A = \{0, 5, 10, 15, 20\}$
$A = \{2, 3\}$
$A = \{0, 5, 10, 15, 20, \ldots\}$