\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Given$$\begin{aligned}A =& \{n \in \N \mid n \text{ is divisible by } 9\}\\ B =& \{n \in \N \mid n \text{ is divisible by } 3\}\\ \end{aligned}$$Is \(A \subseteq B\)?