You work as an administrator at ABC.com. The ABC.com network consists of a single domain named ABC.com. All servers in the ABC.com domain， including domain controllers， have Windows Server 2012 R2 installed.You have been instructed to add a new domain controller to ABC.com’s existing environment. Which of the following actions should you take？（）

A. You should consider making use of Server Manager.
B. You should consider making use of Authorization Manager.
C. You should consider making use of Remote Desktop Gateway Manager.
D. You should consider making use of Network Load Balancing Manager.