Which XXX completes the Python ArrayList class's append$()$ method?

def append$($self$,$ new$\_$item$)$:

$xxx$ :

self.resize$($self$.$length $*2)$

self.array$[$self$.$length$]=$ new$\_$item

self.length $=$ self.length $+1$

if self.allocation$\_$size $>$ self.length

if self.allocation$\_$size $$ self.length

if self.allocation$\_$size $!=$ self.length

if self.allocation$\_$size $==$ self.length