Your network contains an Active Directory domain named contoso.com.
The domain contains a domain controller named DC1 that runs Windows Server 2008 R2 Service Pack 1 (SP1).
The forest functional level is Windows Server 2003.
The domain contains two member servers named Server1 and Server2.
Server1 has Microsoft SQL Server 2008 installed.
Both servers run Windows Server 2008 R2 SP1.
Your company plans to deploy System Center 2012 R2 Service Manager to Server2.
You need to ensure that you can install Service Manager on Server2.
What should you do?

A.
Upgrade the operating system on Server1.

B.
Raise the forest functional level.

C.
Upgrade the operating system on DC1.

D.
Upgrade SQL Server on Server1.

E.
Upgrade the operating system on Server2.