Let us have grammar G:G $=(\{$T$,$ U$,$ V$,$ W$\},($a$,$ b$,$ c$),$ P$,$ U$)$P$=\{$U $->$epsilon$|$aT$,$W$->$bW $|$a $|$ b$,$T $->$ aT$,$V $->$bT $|$ a$\}$Select true $($V$)$ or false $($X$)$ for each statement:$1.$G is an unrestricted grammar$\mathrm{.}2.$G is a context$-$sensitive grammar$\mathrm{.}3.$G is a context$-$free grammar$\mathrm{.}4.$G is a regular grammar.