Which of the following accurately explains the difference between kanban and CONWIP (constant work-in-process) as methods for controlling WIP?
A - Kanban moves work downstream as it is completed. CONWIP each workstation controls their own WIP.
B - Kanban signals work to move when the next work station is ready. In CONWIP a unit enters the system only when a unit exits.
C - Kanban cards flag when a bin is empty. CONWIP uses andon lights (green, yellow, red) to signal supply status.