What should you do next?

You work as a Network Administrator at AIOTestking.com. AIOTestking.com has an Active Directory
Domain Services (AD DS) domain named AIOTestking.com. All servers on the network have Windows
Server 2012 R2 installed and all client computers have Windows 7 Professional installed.
The network includes a server named TESTKING-DC12 that is configured as a domain controller.
A server named TESTKING-SR27 is configured as a Network Policy Server (NPS) and a Health
Registration Authority (HRA). A server named TESTKING-SR32 runs Certificate Services and is
configured as an Enterprise Certification Authority (CA) for the AIOTestking.com domain. The CA has
been associated with the HRA on TESTKING-SR27.
The HRA has been configured with an SSL certificate and the appropriate DNS Service Locator
(SRV) records have been configured.
You want to configure HRA automatic discovery on the client computers. You configure a Group
Policy Object (GPO) to clear all trusted group configurations from the client computers.
What should you do next?

A.
You should configure the EnableDiscovery registry key on TESTKING-SR32.

B.
You should configure the EnableDiscovery registry key on TK TESTKING-SR27.

C.
You should configure the EnableDiscovery registry key on the client computers.

D.
You should configure the EnableDiscovery registry key on a TESTKING-DC12.