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$2$ point$($s$)$

possible

Which one of the following scenarios represents the use of a kanban to reduce inventories?

A$.$ A "customer" work center signals to the "supplier" workstation that more parts are needed.

B$.$ A supervisor tells the operators to stay busy and start producing parts for next month.

C$.$ A supervisor signals to several work centers that the production rate should be changed.

D$.$ A "supplier" work center signals the downstream workstation that a batch has been completed.

$$ E$.$ An operator asks the next station's operator to help him fix his machine.