Which of the following are authentication server systems with operational modes that can implement SSO?

Which of the following are authentication server systems with operational modes that can
implement SSO?

A.
Kerberos, SESAME and KryptoKnight

B.
SESAME, KryptoKnight and NetSP

C.
Kerberos and SESAME

D.
Kerberos, SESAME, KryptoKnight, and NetSP

Explanation:
“Scripts, directory services, thin clients, Kerberos, SESAME, NetSP, scripted
access, and KrtyptoKnight are examples of SSO(single sign on) mechanisms.”
Pg. 14 Tittel: CISSP Study Guide Second Edition