You work as a Network Administrator for Perfect Solutions Inc. The company plans to establish a Windows 2008 Active Directory-based network. The network will be configured as a single forest and a multiple-domain network. You are planning for the placement of operations master roles. In this context, which of the following operations master roles are applied to the entire forest? Each correct answer represents a complete solution. Choose all that apply.
A. Domain naming master
B. Schema master
C. PDC emulator master
D. Relative ID (RID) master
