Problem $3$: Search Tree

Suppose that we have numbers between $1$ and $100$ in a binary search tree and want to search for the number $45.$ Which $($possibly multiple$)$ of the following sequences could be the sequence of nodes examined? Underline them. Show your work!

$5,2,1,10,39,34,77,63$

$1,2,3,4,5,6,7,8$

$9,8,63,0,4,3,2,1$

$8,7,6,5,4,3,2,1$

$50,25,26,27,40,44$