Which two statements are true?

You are implementing Segment Value Security rules.
Which two statements are true?

A.
You can use hierarchies to define rules.

B.
The Segment Value Security rules do not take effect until you assign the rules to users and products.

C.
When you enable Segment Value Security on a segment, users will not be able to access any values until
you grant access to users and products.

D.
When you enable or disable Segment Value Security, you do not need to redeploy your chart of accounts.