which option will allow IKEv2 connections on the adaptive security appliance?

Regarding licensing, which option will allow IKEv2 connections on the adaptive security
appliance?

A.
AnyConnect Essentials can be used for Cisco AnyConnect IKEv2 connections.

B.
IKEv2 sessions are not licensed.

C.
The Advanced Endpoint Assessment license must be installed to allow Cisco AnyConnect
IKEv2 sessions.

D.
Cisco AnyConnect Mobile must be installed to allow AnyConnect IKEv2 sessions.