What are the two ways that IGMP is used? (Choose two.)

A.
It can be sent by a host to indicate its interest of joining a specific multicast group.

B.
It can be sent among routers to exchange multicast routing information.

C.
It can be used to specify packet forwarding methods for a specific multicast group.

D.
It can be sent by a router to query multicast listeners on a given subnet for all multicast groups.