Which of the Following Is the BEST Definition of an Incident

Multiple Choice

Which of the following is the BEST definition of an Incident?

A) A warning that a threshold has been reached, something has changed, or a failure has occurred
B) An unplanned interruption to an IT service or reduction in the quality of an IT service
C) A change of state which has significance for the management of a Configuration Item or IT Service
D) Loss of ability to operate to specification, or to deliver the required output