You are developing a web application that connects to an existing virtual network. The web application needs to access a database that runs on a virtual machine.
In the Azure portal, you use the virtual network integration user interface to select from a list of virtual networks. The virtual network that the web application needs to connect to is not selectable.
You need to update the existing virtual network so you can connect to it.
What should you do?
A. Enable ExpressRoute.
B. Enable point-to-site VPN with a static routing gateway.
C. Enable point-to-site VPN with a dynamic routing gateway.
D. Enable site-to-site VPN.
