A grocery store is attempting to implement a kanban system. Which of the following would not be an application of kanbans?

Question $12$ options:

A$.$ An empty cake tray signalling the bakery to produce $2$ dozen cakes.

B$.$ A line of $5$ people in the restaurant signalling the chef to heat up $5$ lobsters.

C$.$ A red light on top of the cashier's lane signals that the cashier needs additional change replenished.

D$.$ The meat department stocking up on lamb before Hari Raya.

E$.$ All of the above are kanban applications.