Select the operations master role that is responsible for providing backward compatibility with Windows NT servers configured as Windows NT backup domain controllers or member servers: a. Infrastructure masterb. Domain naming masterc. RID masterd. PDC emulator master

Option D i. e., PDC emulator master is the correct answer.

Explanation:

In the following statement, the operation master role is maintained by the PDC (Primary Domain controller) emulator master that is important for support that type of compatibility which is backward with the server of the Windows NT network that configured as Controllers or User Servers for Windows NT backup.

Other option is not correct because the following statement is related to the PDC emulator master.