What is true when an event does not trigger any transitions in the current state?

What is true when an event does not trigger any transitions in the current state?
A . The state machine is not well formed.
B . The handling of the situation is a semantic point.
C . An exception is raised.
D . The event is discarded.
E . The event is deferred until a state is reached that responds to that trigger.

View Answer

Answer: D