Which service setting determines whether the traffic is passed to the SSL proxy or the HTTP proxy when a browser is configured to use an explicit proxy connection to the ProxySG? (Choose the best answer.)

Which service setting determines whether the traffic is passed to the SSL proxy or the HTTP proxy when a browser is configured to use an explicit proxy connection to the ProxySG? (Choose the best answer.)
A . Enable SSL/TLS
B . Detect protocol
C . Authenticate-401
D . Forward client cert

Answer: B