Of the documents sent to the customer along with the goods ordered, which of the following is MOST important to all internal and external agents involved and why?

		The packing slip, because it lists the quantity and description of each item included in the shipment and allows easy identification of potential errors in delivery.
		The sales invoice, because it identifies the items billed for that shipment, the payment terms on the order, and the total amount that needs to be paid.
		The RFID tags, because they make the shipment process and receipt of inventory process more accurate and efficient.
		The bill of lading, because it is a legal contract defining responsibility for the goods in transit and acts as a protection for both the buyer and seller of the goods.