Question: What is the primary purpose of defining the 'UDP/MBMS-FEC/RTP/AVP' and 'UDP/MBMS-FEC/RTP/SAVP' SDP protocol identifiers in the context of Multimedia Broadcast/Multicast Service (MBMS)?
Option 1: To introduce new error correction mechanisms for unicast transmissions.
Option 2: To enable the use of TCP for MBMS transmissions, enhancing reliability.
Option 3: To facilitate interoperability with non-3GPP multicast standards.
Option 4: To identify specific protocol combinations for efficient transmission of multimedia content over MBMS, incorporating FEC and RTP profiles.
Explanation: The definition of these SDP protocol identifiers specifically aims to identify unique combinations of protocols (UDP, MBMS-FEC for error correction, RTP with AVP or SAVP profiles) tailored for the efficient multicast/broadcast transmission of multimedia content over MBMS, ensuring receiving devices can properly interpret and process the transmitted data for reliable and efficient multimedia delivery in a broadcast/multicast scenario.