Refer to the diagram and answer the following questions. To allow the user to access a network resource protected by a security gateway, a VPN tunnel establishment process is initiated. An IKE negotiation takes place between the gateways. At what point can the Client successful connect to the Host 1?

A.
Once IKE is successfully completed, and before the tunnel is created

B.
During the IKE negotiation process

C.
Once IKE is successfully completed, and a tunnel is created

D.
Before the IKE negotiation process

E.
Before the IKE takes place