An administrator has manually migrated local accounts to LDAP, instead of using the migration tools.
When trying to authenticate as a user, an error is returned about invalid credentials.
What is the most likely cause of this?

A.
The password hash type was not included in the user’s password attribute

B.
Shadow passwords are incompatible with OpenLDAP.

C.
The original password from /etc/passwd was not included

D.
The administrator forgot to run slappasswd to convert the hashes in /etc/shadow.

E.
The administrator forgot to run ldappasswd to convert the hashes in /etc/shadow