Your network contains a servernamed Server1that runs Windows Server 2008 R2.
On Server1, you create an Active Directory Lightweight Directory Services (AD LDS) instance named
Instance1.
You connect to Instance1by using ADSI Edit.
You run the Create Object wizard and you discover that there is no User object class.
You need to ensure that you can create user objects in Instance1.
What should you do?

A.
Run the AD LDS Setup Wizard.

B.
Modify the schema of Instance1.

C.
Modify the properties of the Instance1 service.

D.
Install the Remote Server Administration Tools (RSAT).

Explanation:
Reference:
http://technet.microsoft.com/en-us/library/cc772194.aspx
To create users in AD LDS, you mustfirst import the optional user classes that are provided with AD LDS
into the AD LDS schema. These user classes are provided in importable .ldf files, which you can find in the
directory %windir%adam on the computer where AD LDSis installed.
The user, inetOrgPerson, and OrganizationalPerson object classes are not available until you import the AD
LDS user class definitions into the schema.