Which two are true about the roles? (Choose two.)
A. All privileges and roles granted to a user are enabled by default when the user logs in.
B. The SETROLE statement can be used once per session.
C. The SETROLE statement enables as well as disables roles in a session.
D. A role must be disabled before it can be revoked from a user.
E. The ALTER USER statement must be used to set specific default roles for a user.
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