We are given the grammar rules$24/7$ PA FEBACThese rules are only some of the rules of a larger grammar G$,$ but we are not given the remaining rules of G$.$ We are told that A is the start symbol of G and that the following holds$($c$,$ d$)$ FIRST$($C$)(,$ e$)$ FIRST$($E$)(,$ f$,$ g$)$ c FIRST$($F$)$Recall that end of file is denoted EOF. The symbols is used to denote set inclusion. For example $($e$,$ c$,$ d$)$ FIRST$($C$)$ means that e$,$ c$,$ and d are all elements of FIRST$($C$),$ Which of the following must hold $($more than one choice or no choice can be correct$)?$