Consider the following context$-$free grammar $G.$

$S$axC$|AZc$

$x$axb$|$

$ZbZc|$

$AaA|$

$CcC|$

All of the strings below are in $L(G),$ but only some of them are ambiguous in the

language. Which ones? Select all that apply.

aabcccc

aabcc

aaabbccc

aaabbcc

$ac$