If no ACL lines are included in slapd.conf, what is the default behavior of slapd?

If no ACL lines are included in slapd.conf, what is the default behavior of slapd?

A.
Allow anyone to read any entry.

B.
Deny anyone from reading any entries.

C.
Only certain attributes such as userPassword are protected from read access.

D.
Access to the directory is only allowed from the local machine.