Vertices S and B are black, vertices C and D are gray. All other vertices are white. In the next iteration, a new vertex is dequeued $($from the left end $)$ of Q and processed. The diagram of the resulting state will look like this:

Group of answer choices

S$,$ B$,$ C and D are black, E and F are gray, and Q is $[$E$,$ F$]$ with labels $2,2.$

S$,$ B$,$ and C are black, D$,$ E and F are gray, and Q is $[$D$,$ E$,$ F$]$ with labels $1,2,2.$

S$,$ B$,$ and D are black, C$,$ E and F are gray, and Q is $[$E$,$ F$,$ C$]$ with labels $3,2,1.$

S$,$ B$,$ and C are black, D$,$ E and F are gray, and Q is $[$D$,$ E$,$ F$]$ with labels $1,2,3.$