The values $5,2,3,4,1,6,7$ are inserted $($in the order given, via put$)$ into an initially empty binary search tree. What key$($s$)$ are the $($immediate$)$ children of $2?$

Question $3$ options:

$3$ and $4$

$3$ and $5$

$1$ and $5$

$1$ and $4$

none of these