An Organization Is Planning to Extend Their Data Center by Connecting

An organization is planning to extend their data center by connecting their DC with the AWS VPC using the VPN gateway. The organization is setting up a dynamically routed VPN connection. Which of the below mentioned answers is not required to setup this configuration?

A) The type of customer gateway, such as Cisco ASA, Juniper J-Series, Juniper SSG, Yamaha.
B) Elastic IP ranges that the organization wants to advertise over the VPN connection to the VPC.
C) Internet-routable IP address (static) of the customer gateway's external interface.
D) Border Gateway Protocol (BGP) Autonomous System Number (ASN) of the customer gateway.