15. The mechanism for managing an item under DDMRP follows which of the following triggering logic?

a. A two-level Min/Max logic.

b. When the projected inventory balance gets to the safety stock level a replenishment order is planned.

c. When the net flow position gets to the safety stock level, a replenishment order is planned.

d. A three-zone trigger logic that plans a replenishment when the net flow position gets below the yellow level.