In ITIL 4, events are classified based on their impact and urgency, and different types of events require different responses. Events can be informational, warning, or exceptional. Each type requires a tailored response based on its classification to ensure that appropriate actions are taken​​.
Asingle set of control actionsfor all event classes (Option A) is incorrect because it does not consider the specific needs of each event type.
Informational events(Option B) usually do not require immediate action.
Instructional events(Option C) are typically not related to incident registration.