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