What should be done to speed up the searches?

An administrator notices that searches are being processed sequentially and taking a long time to complete. What

should be done to speed up the searches?

A.
Refine the search filter

B.
Use the -binarytreesearch option with ldapsearch

C.
Use the -fuzzy option with ldapsearch

D.
Add the correct indexes in slapd.conf, stop the server and run slapindex