What is a feature of SIP?

What is a feature of SIP?

A.
SIP is a transport-layer control protocol that uses IP addresses for transporting multimedia traffic and call management.

B.
SIP is a session-layer control protocol that uses SIP addresses for signal and session management.

C.
SIP is an application-layer control protocol that uses SIP addresses for signal and session management.

D.
SIP is a session-layer control protocol that uses IP addresses for transporting multimedia traffic and session management.