Answer:
C. 12 cases remaining
Step-by-step explanation:
The manager of the Quick Stop Corner Convenience Store (which never closes) sells four cases of Stein beer each day.
Orders arrive three days from the time they are placed.
Thus, the shop has 3 days of merchandise in transit:
4 cases x 3 days in-transit: 12 cases
When there is 12 cases remaining It should do the order. This will make the order arrive exactly when the inventory drops to zero according to a just in time policy.