Choose the example below that illustrates the application of a Kanban system described in the Toyota case. Briefly explain your answer.

a) Nurses in a hospital were asked to order syringes only when they need them and in the quantity that they need them.

b) Nurses in a hospital were asked to maintain syringes in two plastic boxes in the stock room. They were asked to take syringes from one of those two boxes till it became empty and then move the empty box to a different section of the stock room so the inventory manager can restock that box.

c) Nurses in a hospital were asked to escalate any issues in the ward immediately to supervisors rather than wait for the doctors to arrive in the next shift to examine those problems.

d) Nurses were asked to reduce all wastes so that the hospital can continuously move towards the ideal process for patient care.