What is the difference between RTP and RTCP$?$

Question $21$ options:

RTP defines a standardized port for delivering audio and video over the Internet, while the RTCP provides out$-$of$-$band control information for an RTP port.

RTP defines the protocol required to establish and tear down communications, including voice and video calls flowing over a packet network, while the RTCP provides out$-$of$-$band control information for an RTP port.

RTP defines a standardized packet format for delivering audio and video over the Internet, while the RTCP provides out$-$of$-$band control information for an RTP flow.

RTP defines a standardized port for delivering audio and video over the Internet, while the RTCP defines the protocol required to establish and tear down communications, including voice and video calls flowing over a packet network.