Isabelle works for the Department of Defense. Her team is reviewing documents assigned the Secret classification level for an initiative that ended $18$ years ago. Depending on the content, any the following actions could occur, except:

A$.$ change the classification level to Top Secret.

B$.$ declassify the documents because they are no longer deemed sensitive$.$

C$.$ change the classification level for each document to Confidential.

D$.$ allow automatic declassification to occur immediately.