Which method should an administrator use to add Centralized Logging to a vCloud Director cell?

Which method should an administrator use to add Centralized Logging to a vCloud Director cell?

A.
Modify the $VCLOUD_HOME/etc/log4j.properties to include the Syslog Server information.

B.
Set the Syslog Server address in the vCloud UI.

C.
Modify the $VCLOUD_HOME/etc/system.properties to include the Syslog Server information.

D.
Modify the Syslog Server with the vCloud Director Server’s address.