A SysOps Administrator is deploying an Amazon EC2 instance and is using third-party VPN software to route traffic to an on-premises data center.
Based on the shared responsibility model, AWS is responsible for managing which element of this deployment?

A. Configuring Ipsec tunnels for the VPN.
B. Ensuring high availability of the EC2 instance.
C. Ensuring high availability of the VPN connection.
D. Managing the health of the underlying EC2 host.