A clientless SSL VPN user who is connecting on a Windows Vista computer is missing the menu option for Remote Desktop Protocol on the portal web page. Which action should you take to begin troubleshooting?

A.	Ensure that the RDP2 plug-in is installed on the VPN gateway
B.	Reboot the VPN gateway
C.	Instruct the user to reconnect to the VPN gateway
D.	Ensure that the RDP plug-in is installed on the VPN gateway