What is correct regarding multicasting and AOS-CX switches?

What is correct regarding multicasting and AOS-CX switches?
A . IGMP-enabled AOS-CX switches flood unknown multicast destinations.
B . IGMP snooping is enabled by default, on Layer-3 VLAN interfaces
C . IGMP query- functions are enabled by default, on Layer-2 VLAN interfaces
D . IGMP snooping is disabled, by default on Layer-2 VLAN interfaces

View Answer

Answer: D