Which of the following is an example of how electronic data interchange may be used to support efficient purchases of inventory?

		Review of all purchase requisitions by a supervisor in the user department before submitting them to the purchasing department
		Automated reorder by the purchasing system connected to the supplier when low inventory level is indicated in the system
		A policy requiring electronic review of the purchase orders before receiving a new shipment
		A policy requiring agreement of the receiving report and packing slip before storage of new receipts