Which of the Following Represents State Diagram

Multiple Choice

Which of the following represents State Diagram?

A) the finite automaton initial state is designated by a special initial pseudo-state depicted as a large black dot at the tail of an arrow pointing at the initial state
B) a finite automaton may execute forever or it may halt in a final state
C) transitions are represented by solid arrows labeled with one or more transition strings that describe the circumstances under which the transition is triggered and the actions that may ensue
D) all of the mentioned