You need to ensure that all documents added to the site have a document ID

You create a SharePoint site by using the Document Center site template. You need to ensure
that all documents added to the site have a document ID. The document ID must include the date
that the document was added to the site. What should you do?

A.
Register a class that derives from DocumentIdProvider.

B.
Register a class that derives from DocumentId.

C.
Modify the Onet.xml file of the site.

D.
Modify the DocIdRedir.aspx page.