Which two statements are true about Internet Group Management Protocol (IGMP) snooping? (Choose two.)

A.
IGMP snooping and Cisco Group Membership Protocol (CGMP) can be used simultaneously on a switch.

B.
IGMP snooping and Cisco Group Membership Protocol (CGMP) were developed to help Layer 3 switches make intelligent forwarding decisions on their own.

C.
IGMP snooping examines IGMP join/leave messages so that multicast traffic is forwarded only to hosts that sent an IGMP message toward the router.

D.
IGMP snooping is an IP multicast constraining mechanism for Layer 2 switches.

E.
IGMP snooping is enabled with the ip multicast-routing global configuration command.