Where do you verify that SmartDirectory is enabled?

Where do you verify that SmartDirectory is enabled?

A.
Verify that Global Properties > SmartDirectory (LDAP) > Use SmartDirectory (LDAP) for
Security Gateways is checked

B.
Verify that Global Properties > Authentication > Use SmartDirectory (LDAP) for Security
Gateways is checked

C.
Verify that Security Gateway > General Properties > Authentication > Use SmartDirectory
(LDAP) for Security Gateways is checked

D.
Verify that Security Gateway > General Properties > SmartDirectory (LDAP) > Use
SmartDirectory (LDAP) for Security Gateways is checked

Explanation: