Which syslog severity level is level number 7?

Which syslog severity level is level number 7?
A. Warning
B. Informational
C. Notification
D. Debugging

Correct Answer: D
Explanation/Reference:

Reference: http://www.cisco.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nx-os/system_management/configuration/guide/sm_nx_os_cg/sm_5syslog.html