Final answer:
The shipper is responsible for validating that the Transportation Control Number (TCN) on the military shipping label corresponds to the due in document number on the source document. The correct option is A.
Step-by-step explanation:
The responsibility for validating that the Transportation Control Number (TCN) on the military shipping label corresponds to the due in document number on the source document falls to the shipper. The shipper is tasked with ensuring that the documentation and the actual shipment match and are processed correctly.
This is critical for keeping track of shipments and for the purposes of inventory control within the military supply chain. The TCN is a vital identifier that allows both the shipper and receiver to track and manage the movement of goods.