You work as the enterprise exchange administrator at Xxx .Xxx is using Microsoft Exchange Server 2010 as their messaging solution.Which of the following options can be you in order to change the permissions settings for a public folder？（）

• A、You must use the Active Directory Users and Computers.
• B、You must use the Microsoft Office Outlook.
• C、You must use the Mail Flow Troubleshooter.
• D、You must use the Exchange Server Jetstress 2010.