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

public void append$($int newItem$)\{$

if $($XXX$)\{$

resize$($arrayListLength $*2)$;

$\}$

arrayData$[$arrayListLength$]=$ newItem;

$++$arrayListLength;

$\}$

Group of answer choices

arrayData.length $>$ arrayListLength

arrayData.length $<$ arrayListLength

arrayData.length $!=$ arrayListLength

arrayData.length $==$ arrayListLength