Relationship between virtual system and VPN instance, which of the following options is wrong?

Relationship between virtual system and VPN instance, which of the following options is wrong?
A . When you create a virtual system, a VPN instance of the same name is automatically generated.
B . The underlying of the proposed system is dependent on the automatically generated VPN instance. When the upper layer services are configured, it is not necessary to link with the VPN instance.
C . The automatically generated VPII instance must be bound to the VPN instance on the interface, just like the manually configured VPN instance.
D . Administrators can also use the ip vpn-instance command to manually create a VPN instance for route isolation.

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Answer: C