Which two limitations of PIM snooping are true? (Choose two)

Which two limitations of PIM snooping are true? (Choose two)
A . 224.0.1.39 and 224.0.1.40 are always flooded
B . All join and prune messages are flooded to all router ports
C . All traffic in sparse group mode is treated as unknown traffic and dropped
D . If non-PIMv2 multicast routers are on the network, they are flooded with all traffic
E . Directly connected sources are supported only for unidirectional PIM groups

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Answer: AD