Which ldif file must you modify to extend the schema of a Windows 2000 domain?

A.
In NGX you do not need to modify any .ldif file

B.
The appropriate .ldif file is located in the Security Gateway: $FWDIR/conf/ldif/Microsoft_ad_schema.ldif

C.
The appropriate .ldif file is located in the SmartCenter Server: $FWDIR/lib/ldap/schema_microsoft_ad.ldif

D.
The appropriate .ldif file is located in the Security Gateway: $FWDIR/lib/ldif/Microsoft_ad_schema.ldif

E.
The appropriate .ldif file is located in the SmartCenter Server: $FWDIR/conf/ldif/Microsoft_ad_schema.ldif