We visit neighbours in the order in which they appear in this adjacency list

$0$: $1,2$

$1$: $0,3$

$2$: $1$

$3$: $2,4$

$4$: $1,2,5$

$5$: $3$

Which of the following gives the postorder sequence from this traversal, i$.$e$.,$ is a list of the vertices in order of the time that the call to depth$-$first search on the vertices finishes.