How are annotations stored in the repository?

A.
as objects of type dm_note and linked to the PDF document as a rendition
B.
as objects of type dm_note and linked to the document using a dm_relation object
C.
inside the PDF rendition, and the referencing bookmarks are stored as objects of type
dm_relation
D.
as objectd of type dm_relation and linked to the document using a dm_relation_type object with
relation_name DM_ANNOTATE
Explanation: