You need to define an authentication system for the main office database administrators. The setup should require the minimum amount of administrative effort. The authentication environment must fulfill the company’s security requirements.What should you do？（）

• A、Create a SQL Server login with Windows Authentication for each main office database administrator.Add all of these logins to the db_owner role in each database.
• B、Create a SQL Server login with SQL Server Authentication for each main office database administrator.Add all of these logins to the sysadmin role.
• C、Create a Windows global group named DBAdmins. Add each main office database administrator’s Windows user account to the Windows DBAdmins group.Create a SQL Server login with Windows Authentication for the group.Add the group to the serveradmin fixed server role.
• D、Add each main office database administrator’s Windows user account to the Windows SQLManagersgroup.