You work as the IT professional in an international company which is named Wiikigo. You are experiencedin implementing and administering a network operating system. You are specialized in deploying servers，configuring Windows Server 2008 Terminal services and network application services， and configuring aweb services infrastructure. There is an Active Directory domain in your company. The company runs Terminal Services. A user has remotely logged on to the Terminal Server. The user requires help to use anapplication. When you connect to the Terminal Server session， you are not able to operate any applications. You have to make sure that you can assist any user on the Terminal Server. So what action should you perform to achieve this？（）

A. Use remote control should be enabled with the following settings in the RDP-Tcp Properties. The Levelof control policy setting should be configured to Interact with the session. The user should be instructedto log off and log back on.
B. After the Tscon /v command is run from the Terminal Server， reconnect to the session.
C. After the Chgusr /execute command is run on the Terminal Server， reconnect to the session.
D. Use remote control should be enabled with default user settings in the RDP-Tcp Properties.