Which two statements about a call from AST 1011111 to Remote Worker AST 1011112 are true?

Refer to the Exhibit.

Which two statements about a call from AST 1011111 to Remote Worker AST 1011112 are true? (Choose two.)
A . Avaya Session Border Controller for Enterprise (SBCE) periodically sends SIP Options to 1011112 looking for a 200 ok response to check it is reachable.
B . SIP Signaling traverses the Avaya Session Border Controller for Enterprise (SBCE) and the Media must bypass the SBC
D . As far as Avaya Aura® Session Manager (SM) is concerned, all Remote Worker phones are registering from an IP address equal to the Avaya Session Border Controller for Enterprise (SBCE) Remote Worker Private IP address.
E . Avaya Session Border Controller for Enterprise (SBCE) needs to be built as a trusted SIP Entity and Entity link for remote workers.
F . The configuration of a Remote Worker AST is the same as an Office Worker AST in the Avaya Aura® System Manager (SMGR) user profiles.

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Answer: C,E