You are the help desk manager for your company. The company network consists of a single Active Directory domain. All client computers run Windows XP Professional. All help desk technicians are members of the Help Desk Technicians group. They use Remote Assistance to remotely control user sessions to provide online support and training to users. The users currently use Windows Messenger to submit Remote Assistance invitations to the help desk technicians. You want to reduce the time required for help desk technicians to respond to Remote Assistance requests. To accomplish this goal, you want to configure the client computers to allow help desk technicians to establish a Remote Assistance session with a client computer without requiring an invitation from a user. What should you do?（） 

• A、In the Default Domain Policy, set the Remote Assistance - Solicited Remote Assistance policy setting to Disabled. 
• B、In the Default Domain Policy, set the Remote Assistance - Offer Remote Assistance policy setting to Enabled and add the Help Desk Technicians group to the Helpers list. 
• C、In each computer's Local Security Policy, grant the Help Desk Technicians group the Allow logon through Terminal Services user right. 
• D、In the System properties for each computer, select the Allow users to connect remotely to this computer option, and add the Help Desk Technicians group to the list of allowed users.