Examine the following Python code and answer the question that follows:

$$ def modify$\_$list$($lst$)$:

$$ lst$.$append$(4)$

$$ lst $=[1,2,3]$

$$ return lst

$$ numbers $=[0]$

$$ modify$\_$list$($numbers$)$

$$ print$($numbers$)$

A What will be printed and why?

B How does the $$modify$\_$list$$ function affect the $$numbers$$ list.