Which security log messaging method is the most common message logging facility and why?

A.
SNMP traps, because the router can act as an SNMP agent and forward SNMP traps to an external SNMP server

B.
buffered logging, because log messages are stored in router memory and events are cleared whenever the router is rebooted

C.
console logging, because security messages are not stored and do not take up valuable storage space on network servers

D.
syslog, because this method is capable of providing long-term log storage capabilities and supporting a central location for all router messages

E.
logging all events to the Cisco Incident Control System to correlate events and provide recommended mitigation actions