Which is true about the UNLIMITED TABLESPACE SYSTEM privilege?
A. It can be granted to any user and any role.
B. It is overridden by any specified user space quota.
C. It allows a user to have unlimited space in any tablespace in the database.
D. It allows a user to have unlimited space only in his or her default permanent tablespace.
E. It can be revoked from a user and replaced with a specific space quota only if no user schema objects exist.