A、Create a script that uses Active Directory Services Interfaces (ADSI) to import all user account into the new environment.

B、Create new accounts for all users. Create a trust relationship between the existing environment and the new environment to enable access to resources in the existing environment.

C、Import all user accounts into the new environment by using the Active Directory Migration Tool (ADMT).

D、Import all user accounts into the new environment. Instruct users to no change their passwords during the migration phase so that they can access resources in the existing environment.