Answer:
C) hierarchy.
Explanation:
A unit level cost is a cost incurred every time one unit is produced, e.g. a bottle.
A batch level cost is a cost related to a group or batch of units produced, e.g. a box containing 20 units.
A product sustaining level cost is a cost related to the activities undertaken to support an individual type of product, e.g. software updates.
A facility level cost is a cost incurred in order to maintain a productive facility working, e.g. lighting and cleaning costs.
