Which one of the following statements can be true?

In order to migrate usernames and passwords from a NIS server, the passwd and shadow files were used with a custom

script to import the data to OpenLDAP.
After properly creating a test workstation to authenticate against LDAP, the number of lines outputted from getent

passwd are different from the number of the NIS client workstation.
Which one of the following statements can be true?

A.
The OpenLDAP client is querying the NIS server on the wrong TCP/IP port

B.
The NIS database is not synchronized with passwd and shadow

C.
The NIS clients are not receiving the correct files from the server

D.
The OpenLDAP server creates some additional users that are show in getent

E.
The NIS clients are confused since OpenLDAP and NIS use the same port to communicate