What effect does this action have on the document info record?

A user releases a document info record with a change number.

What effect does this action have on the document info record? Note: There are 2 correct Answers to this question.
A . All document fields are locked.
B. The document gets a revision level.
C. The document displays the release key of the change number.
D. The document info record uses the validity of a change number.

Answer: B,D