Which two statements about private VLANs are true? (Choose two.)

A.
Only one isolated VLAN can be mapped to a primary VLAN.

B.
Only one community VLAN can be mapped to a primary VLAN.

C.
Multiple isolated VLANs can be mapped to a primary VLAN.

D.
Multiple community VLANs can be mapped to a primary VLAN.