Your network contains a server named Server1 that runs Windows Server 2008 R2. Server1 has the Remote Access Service role service installed. Server1 is configured as a VPN server.

You need to ensure that you can configure Server1 as a Network Address Translation (NAT) server.

What should you do first on Server1?

A.
Enable IPv4 routing.

B.
Enable IPv6 routing.

C.
Add a new routing protocol.

D.
Add the Routing role service.