Acme Purchase Narrative Acme Needs to Purchase More Copper to Make Widgets. Acme

Acme Purchase Narrative
Acme needs to purchase more copper to make widgets. Acme submits an order to the copper vendor online. When Acme receives the copper shipment, the receiving department processes the shipment. Acme receives an invoice and processes the bill. The corresponding database tables are updated.
-Who are the agents in the Acme Purchase Narrative?

A) Customer, Receiving department
B) Vendor, Receiving department
C) Customer, Receiving department, Accounting department
D) Vendor, Receiving department, Accounting department