Which server role should you deploy?

HOTSPOT
Your data center contains 10 Hyper-V hosts that host 100 virtual machines.
You plan to secure access to the virtual machines by using the Datacenter Firewall service.
You have four servers available for the Datacenter Firewall service. The servers are configured as shown in the following table.

You need to install the required server roles for the planned deployment.
Which server role should you deploy? To answer, select the appropriate options in the answer area.
Hot Area:

Correct Answer:

Explanation/Reference:
References:
https://docs.microsoft.com/en-us/windows-server/networking/sdn/plan/installation-and-preparation-requirements-for-deploying-network-controller
https://docs.microsoft.com/en-us/windows-server/networking/sdn/technologies/network-controller/install-the-network-controller-server-role-using-server-manager