This system contains Three $(3)$ lights that control vehicular traffic $($red $=$ stop, yellow $=$ caution, green $=$ go$)$ as well as Two $(2)$ lights to control pedestrian traffic $($red $=$ stop, green $=$ walk$).$

This system will remain in state $1($cars go$/$pedestrians stop state$)$ until the Button is pushed then the light sequence will:

Transition into state $2($cars go$/$pedestrians stop state$)$ which will continue to look for the Button's status but will also wait for $8$ seconds $($this state is to ensure that the light sequence is not instantly triggered if the pedestrian crossing is busy that day$).$

Transition into state $3($cars caution$/$pedestrian stop state$),$ which will be active for $5$ seconds, then

Transition into state $4($cars stop$/$pedestrians go state$),$ which will be active for $10$ seconds

Finally the system will transition back to state $1($cars go$/$pedestrians stop state$)$ and again wait for the Button to be pushed.

Select from the available options below what the purpose of the S$-$R Latch $($S$-$R Flip$-$Flop$)$ block will be in this system.

Group of answer choices