Which two objects should you configure?

You plan to deploy an application as a cloud service. The application uses a virtual network to extend your on-premises network into Azure. You need to configure a site-to-site VPN for cross-premises network connections.

Which two objects should you configure? Each correct answer presents part of the solution.
A . Dynamic routing gateway
B . VPN gateway
C . External-facing IPv6 address
D . External-facing IPv4 address

Answer: B,D