Your company has a Microsoft Exchange Server 2007 environment. Employees have Windows Mobile 6.5 devices. You manage devices by using Microsoft Exchange ActiveSync. You need to allow employees to access only a SharePoint site collection hosted on a specific server from their Windows Mobile devices. Which two actions should you perform? (Each correct answer presents part of the solution. Choose two.)

A.
In the Exchange Management Console, block all unknown servers.

B.
In the Exchange Management Console, add the server hosting the SharePoint site collection to the Allow list.

C.
In the SharePoint site collection, add all employees as site collection members.

D.
On the server hosting the SharePoint site collection, run the STSAdm command.