What is the language of the grammar with the following production rules? S $->$ ASb $|$ c$,$ A $->$ a:

$*$

$1$ point

$\{$a$^$ncb$^$n $|$ n in N$\}$

$\{$xcb $|$ x in $\{$a$\}^*\}$

$\{$acy $|$ y in $\{$b$\}^*\}$

All of the answers above are incorrect.