Which of the following statements about the intercommunication between Sub VLANs in Super VLAN technology is correct?

Which of the following statements about the intercommunication between Sub VLANs in Super VLAN technology is correct?
A . The host IP addresses in different Sub VLANs belong to the same network segment, and they can communicate directly with each other through Layer 2 forwarding.
B . The host IP addresses in different Sub VLANs belong to the same network segment, but due to the isolation of Sub VLAN, the Sub VLANs cannot communicate with each other.
C . Hosts in different Sub VLANs are isolated at Layer 2, and can communicate at Layer 3 through the common proxy ARP technology of the Super VLAN interface.
D . Hosts in different Sub VLANs are isolated at Layer 2, and can communicate at Layer 3 through the local proxy ARP technology of the Super VLAN interface.

Answer: D