What is the reason for this?

You have implemented a consignment process. The first consignment fill-ups are done, but invoicing is not possible.

What is the reason for this?
A . The consignment fill-up document is blocked for billing.
B . A condition record was not found in the consignment fill-up document.
C . Goods movement did not take place.
D . The ownership of the goods was not transferred yet.

Answer: D