Which statement is true about the role based security model in Oracle Content Server?

Which statement is true about the role based security model in Oracle Content Server?

A.
Only the system administrator user can assign a role to each user.

B.
Only the system administrater role can assign more than one role to a user.

C.
Both the system administrator and subadministrator users can assign one or more roles
to a user.

D.
Only the subadministrator role can assign more than one role to a user.