You work as the enterprise exchange administrator at Xxx .Xxx is using Microsoft Exchange Server 2010 as their messaging solution.What actions must you take to disable notifications by text messages to mobile devices？（）

• A、You must set up a Group Policy Object.
• B、You must set up an Outlook Web App Mailbox policy.
• C、You must change the properties of the public folder database.
• D、You must set up recipient filtering.