All APs are receiving multicast traffic, instead of only the APs that need it. What is the cause of this problem?

All APs are receiving multicast traffic, instead of only the APs that need it. What is the cause of this problem?

A. The multicast group includes all APs B. The wrong multicast address was used C. The multicast group is assigned the wrong VLAN D. Multicast IGMP snooping is not enabled