How can you configure Cisco Easy VPN Server on a Cisco IOS router in order to allow you to apply various QoS policies to different VPN groups?
A.
Configure the command qos pre-classify under the crypto map that references each VPN group.
B.
Configure Cisco Easy VPN using IPsec Dynamic Virtual Tunnel Interface (DVTI) and apply service policies on the VTI that are referenced by the ISAKMP profiles matching the respective VPN groups
C.
It is not currently possible to apply QoS to different VPN groups
D.
Configure s static VTI that allows configuration of QoS service policies with each VTI referenced by the respective VPN groups