Which of these statements regarding Cisco’s WebVPN support is correct？（）

• A、 Cisco ISR Routers with the Enhanced Security Bundles support WebVPN.
• B、 Cisco security appliances act as a proxy between the end user and the target web server.
• C、 Cisco PIX Security Appliances （running release 7.0） and Adaptive Security Appliances both support WebVPN.
• D、 Cisco’s WebVPN solution supports both TCP and UDP port forwarding for legacy application support.