Your company has an Active Directory domain.
You log on to the domain controller. The Active Directory Schema snap-in is not available in the Microsoft
Management Console (MMC).
You need to access the Active Directory Schema snap-in.
What should you do?

A.
Add the Active Directory Lightweight Directory Services (AD LDS) role to the domain controller by using
Server Manager.

B.
Log off and log on again by using an account that is a member of the Schema Administrators group.

C.
Use the Ntdsutil.exe command to connect to the Schema Master operations master and open the schema
for writing.

D.
Register Schmmgmt.dll.