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

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

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

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

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

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