A system administrator is configuring the security of a new environment. The administrator has been asked to configure one LDAP server that has different sub-trees for business users and administration users.
What should the administrator do to implement the required security configuration?

A. Install and configure a TAI (Trust Association Interceptor)
B. Configure a security domain for the stand-alone LDAP server.

C. Use Federated repositories and configure the supported entity types.

D. Use Stand-alone custom registry and configure the flat file implementation.