You deploy Windows 7 to the computers that are used by your company’s Web developers.  All Web developer user accounts are in a single organizational unit （OU）.   Internet Explorer is blocking pop-up windows for multiple internal Web applications that are hosted on different servers.   You need to use Group Policy to ensure that Internet Explorer does not block pop-up windows for internal Web applications.   What should you do？（）

• A、Add each server to the Intranet zone.
• B、Add each server to the Trusted Sites zone.
• C、Enable Compatibility View in Internet Explorer.
• D、Set the default security setting in Internet Explorer to Medium.