Which of the following describes SIP Early Offer?
A. In SIP Early Offer mode, the SDP media capabilities are sent in the INVITE message of the callingdevice.
B. SIP Early Offer always uses session indicator 183.
C. In SIP Early Offer mode, the SDP media capabilities are sent in the 200 OK messages of the callingdevice.
D. In SIP Early Offer mode, the INVITE and the 200 OK messages use non-SDP message format toindicate SIP Early Offer
