Which three types of subnet scope can be created in ACI? (Choose three.)
A. Public, which is advertised to the external router by the border leaf
B. Private, which is visible only to the local context
C. Shared, which is visible only to the shared context
D. Querier, which enables IGMP snooping on the subnet
E. RFC 3021 subnets, which use /31 host addresses on both ends of a point-to-point link
