Answer:
The correct option is (a)
Step-by-step explanation:
Purchase order is an order that is issued by the buyer to the seller indicating types, quantity and rate of products intended to purchase.
Here, receiving department needs to compare inventory with purchase order. Purchase order constitutes only names of vendor. In this case, receiving department will be able to identify those deliveries for which purchase orders were not issued.
Since, quantity is not mentioned, partial deliveries cannot be detected. Similarly, greater quantity deliveries can also be not identified.