What does this mean in the context of an approval process?

You are browsing documents and encounter a document with the status Draft for Document Update [Pending].

What does this mean in the context of an approval process?
A . Document was approved but has not yet been saved by the originator
B . A document with status Draft for Document Update was approved and can now be added by the originator
C . Document in approval process was canceled by the originator and now cannot be added or updated
D . Originator has made a change to a document and document now meets criteria for an approval

Answer: D