You are a help desk technician for your company. The company network consists of a single Active Directory domain. All client computers run Windows XP Professional. The help desk technicians use Remote Assistance to remotely control user sessions to provide online support to users. The users currently use Microsoft Exchange and Microsoft Outlook to submit Remote Assistance invitations to the help desk technicians. Stephen is a user in the sales department. Stephen has a portable computer and frequently travels to customer locations. While Stephen is in the corporate office, he submits a Remote Assistance invitation to the help desk. When you attempt to answer the invitation and establish the Remote Assistance session, you receive the error message shown in the exhibit. You verify that Stephen's computer is connected to the network and that he did not cancel the invitation. You also verify that the invitation did not expire. You do not experience similar problems when establishing Remote Assistance sessions with other computers. You need to be able to establish a Remote Assistance session with Stephen's computer. What should you do?（）
- AEnable the Remote Desktop service definition in Internet Connection Firewall (ICF) on Stephen's computer.
- BAdd your user account to the Remote Desktop Users list on Stephen's computer.
- CIn the System properties of Stephen's computer, select the Allow users to connect remotely to this computer option, and add your user account to the list of allowed users.
- DIn the Local Security Policy of Stephen's computer, grant your user account the Allow logon through Terminal Services user right.&e