You are installing an application on a computer that runs Windows Server 2008 R2.
During installation, the application will need to install new attributesand classes to the Active Directory
database.
You need to ensure that you can install the application.
What should you do?

A.
Change the functional level of the forest to Windows Server 2008 R2.

B.
Log on by using an account that has Server Operator rights.

C.
Log on by using an account that has Schema Administrator rights and the appropriate rights to install the
application.

D.
Log on by using an account that has the Enterprise Administrator rights and the appropriate rights to install
the application.

Explanation:
http://technet.microsoft.com/en-us/library/cc756898%28v=ws.10%29.aspx
Default groups
Default groups, such as the Domain Admins group, are security groups that are created automatically when you
create an Active Directory domain. You can use these predefined groups to help control access to shared
resources and delegate specific domain-wide administrative roles.
..
Groups in the Builtin container
The following table provides descriptions of the default groups located in the Builtin container and lists the
assigned user rights for each group.

..
Groups in the Users container
The following table provides a description of the default groups located in the Users container and lists the
assigned user rights for each group.