Which option is a requirement for a client when PMIPv6 is used in the Cisco Service Provider WiFi environment?

Which option is a requirement for a client when PMIPv6 is used in the Cisco Service Provider WiFi environment?

A.
The client must be configured to support IPv6 and be assigned an IPv6 address.

B.
The client must be connected to the MAG through an IPv4-over-IPv6 tunnel.

C.
The client must run a dual-stack, that is, have both an IPv4 and an IPv6 address assigned to it.

D.
There are no special requirements for the client.