Which of the following is true of Multicast IP? Select all the correct answers.

A.
Multicast is used to transmit a single message to a select group of recipients

B.
Multicast enabled routers use multicast routing protocols to communicate multicast group information with each other

C.
Multicast enabled routers use Internet Group Management Protocol (IGMP) to communicate multicast group information with each other

D.
Internet Group Management Protocol (IGMP) is defined in RFC 1112

E.
IP Multicasting applications send one copy of each datagram (IP packet) and address it to a group of computers that want to receive it