Which LDAP syntax is correct when asked to reference a specific User Object with an LDIF formatted distinguished name?

A、 ldap://Cn=jdoe/ou=users/dc=company/dc=com
B、 CN=jdoe.OU=users.DC=company.DC=com
C、 ldap://jdoe/users/company/com
D、 CN=jdoe,OU=users,DC=company,DC=com