When applying the following code on a binary $*$ search tree, what will the output be$?$

NodePTR doSomething$($NodePTR root$)$

$\{$

NodePTR $p=$ root;

while $(p$ left $$ NULL$)$

$p=p$ left;

return $p$;

$\}$

return a pointer to the left subtree

delete the left$-$most node

find the depth of the left subtree

return a pointer to the minimum value