NOTE: This is a multi$-$part question. Once an answer is submitted, you will be unable to return to this part.

Let an be the number of ways to climb n stairs if a person climbing the stairs can take one stair or two stairs at a time.

Identify the number of ways the person who can take one stair or two stairs at a time can climb a flight of eight stairs.

Multiple Choice

$34$

$27$

$32$

$45$