In which two ways is P-CSCF discovered by the Voice over LTE IMS client? (Choose two.)

A.
Retrieve the list of P-CSCF information that is stored locally on the IMS client.

B.
Obtain P-CSCF information from other registered IMS clients.

C.
Retrieve the list of P-CSCF information from the Mobility Management Entity.

D.
Obtain P-CSCF information in the protocol configuration options during bearer context
activation.

E.
Obtain P-CSCF information from the Telephony Application Server during IMS
registration.

Explanation: