Which two statements accurately describe a role?（）
- A A role can be given to a maximum of 1000 users.
- B A user can have access to a maximum of 10 roles.
- C A role can have a maximum of 100 privileges contained in it.
- D Privileges are given to a role by using the CREATE ROLE statement.
- E A role is a named group of related privileges that can be granted to the user.
- F A user can have access to several roles, and several users can be assigned the same role.