In HTTP 1.1 there is a CONNECT method defined in the RFC. What is the purpose of this method?

A.
To allow a system administrator to manage the cache via HTTP or HTTPS

B.
For a user’s browser to set up an HTTPS tunnel to proxy server

C.
To allow transparent ftp redirection

D.
For a user’s browser to set up an FTP tunnel to an origin server and tell an upstream proxy to tunnel the response

E.
For a user’s browser to tell a proxy to connect to an origin server and tunnel the following communications to and from the user