Of the threats discussed below， what is the main advantage of using Cisco Secure Desktop which is part of the Cisco ASA VPN solution？（）

• A、 Secure desktop will create a completely separate computing environment thatwill be deleted when you are done.This ensures that no confidential data has been left on the shared/public computer.
• B、 Secure desktop is used to protect access to your registry and systemfiles when browsing to SSL/VPN protectedpages.
• C、 Secure Desktop ensures that an SSLprotected password cannotbe exploitedby a man in the middle attackusing a spoofed certificate.
• D、 Secure desktop hardens the operating system of the machines you are using at the time secure desktop islaunched.