Which of the following graphs is equal to the graph G $=(\{$a$,$ b$,$ c$,$ d$,$ e$,$ f$\},\{\{$a$,$ c$\},\{$a$,$ d$\},\{$b$,$ c$\},\{$c$,$ d$\},\{$c$,$ f$\},\{$d$,$ e$\},\{$e$,$ f$\}\})$

Group of answer choices

G$1=(\{$a$,$ b$,$ c$,$ d$,$ e$,$ f$\},\{\{$c$,$ a$\},\{$a$,$ d$\},\{$b$,$ c$\},\{$c$,$ e$\},\{$f$,$ c$\},\{$d$,$ e$\},\{$e$,$ f$\}\})$

G$2=(\{$a$,$ b$,$ c$,$ d$,$ e$,$ f$\},\{\{$f$,$ e$\},\{$c$,$ a$\},\{$c$,$ b$\},\{$c$,$ d$\},\{$c$,$ f$\},\{$a$,$ d$\},\{$d$,$ e$\}\})$

G$3=(\{$a$,$ b$,$ c$,$ d$,$ e$,$ f$\},\{\{$a$,$ b$\},\{$a$,$ d$\},\{$b$,$ c$\},\{$c$,$ d$\},\{$c$,$ f$\},\{$d$,$ e$\},\{$e$,$ f$\}\})$

G$4=(\{$a$,$ b$,$ c$,$ d$,$ e$,$ f$\},\{\{$a$,$ d$\},\{$a$,$ c$\},\{$c$,$ b$\},\{$c$,$ d$\},\{$c$,$ e$\},\{$d$,$ e$\},\{$f$,$ e$\}\})$