For each of the independent scenarios below, determine if they use a Perpetual or Periodic System. Place a checkmark in the box.

Independent Scenario	Perpetual	Periodic
A store manager checks the computer system to determine if there is enough inventory to fill a customer order.
A year-end physical inventory count is completed.
As inventory is received, all items are scanned and input immediately into the inventory records.
A customer brings 5 items to the cashier to pay. The cashier counts each item and types the amount owed into the cash register.