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.