问题：

[单选]

You are a security administrator for your company. The network consists of a single Active Directory domain. All servers run Windows Server 2003. The network contains three member servers named Server1，Server2，and Server3.   
The three member servers are connected to the Internet. You plan to implement remote access to the company network for users that work from home. You configure and enable Routing and Remote Access on Server1 and Server2. An assistant，who is an administrator on all member servers， configures and enables Routing and Remote Access on Server3. Users from the domain can successfully establish VPN connections from the lnternet to Server1 and Server2. However，users cannot establish a VPN connection to Server3. You discover that Server3 can only authenticate Internet VPN connections from local user accounts.   
You need to ensure that users from the domain can successfully establish a VPN connection to Server3. 
What should you do？（）

A .  Enable the Server3 computer account in Active Directory as trusted for delegation.
B .  Assign the Authenticated Users group the Allow - Allowed to Authenticate permission for the Server3 computer acc
C .  Assign the Server3 computer account the Allow. Read permission on the RAS and IAS Servers access Check cont
D .  Add the Server3 computer account to the RAS and IAS Servers security group.
E .  Add the Server3 computer account to the Windows Authorization Access Group security group.