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 created and linked a new Group Policy object （GPO） to an organizational unit （OU）， named ABCServ， which host the computer accounts for servers in the ABC.com domain.You have been tasked with adding a group to a local group on all servers in the ABC.com domain.This group should not， however， be removed from the local group. Which of the following actions should you take？（）

A. You should consider adding a restricted group.
B. You should consider adding a global group.
C. You should consider adding a user group.
D. You should consider adding a server group.