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Which two reasons explain why a server on VLAN 10 is unable to join a multicast stream that originates on VLAN 20? (Choose two.)

Which two reasons explain why a server on VLAN 10 is unable to join a multicast stream that originates on VLAN 20? (Choose two.)
A. IGMP snooping and mrouter are not enabled on VLAN 10.
B. VLAN 20 has no IGMP snooping querier defined and VLAN 10 has no mrouter.
C. The mrouter on VLAN 20 does not see the PIM join.
D. The mrouter must be on VLAN 10 and VLAN 20.
Correct Answer: AC