Consider an array initially given as $5,1,4,2,8.$ What would be the state of this array after the $4$ th iteration of the Bubble Sort algorithm?

$1,2,4,5,8$

$5,1,2,4,8$

$1,4,2,5,8$

$2,1,4,5,8$

$1,2,4,8,5$