OpenLDAP can be secured by which of these options? (Select THREE correct choices)

OpenLDAP can be secured by which of these options? (Select THREE correct choices)
A . TLS (Transport Layer Security)
B . ACLs (Access Control Lists)
C . HTTPS (Hypertext Transfer Protocol Secure)
D . SSL (Secure Sockets Layer)
E . OSI-L2 (OSI Layer 2 encryption)

Answer: A, B, D