Which two statements regarding the core architecture in the Avaya Aura® 7 solution are true? (Choose two.)

Which two statements regarding the core architecture in the Avaya Aura® 7 solution are true? (Choose two.)
A . SIP trunks can only be configured on Avaya Aura® Session Manager (SM).
B . SIP user Agents register with Avaya Aura® Session Manager (SM).
C . SIP User Agents can register to Avaya Aura® Communication Manager (CM) or Avaya Aura® Session Manager (SM).
D . Avaya Aura® Media Server (AAMS) cannot connect to Avaya Aura® Communication Manager (CM) without routing via Avaya Aura® Session Manager (SM).
E . Avaya Aura® Media Server (AAMS) connects directly to Avaya Aura® Communication Manager (CM) using SI

Answer: B,E