Why Might Terrorists Have to Engage in Violence Before Bargaining

Why might terrorists have to engage in violence before bargaining even starts?

A) They cannot be considered terrorists until they commit violence.
B) It is the only way a state will recognize that they have legitimate grievances.
C) It shows the state they have tried nonviolent alternatives first.
D) Specifying threats can undermine their capability to carry those actions out.
E) A state will not know who credibly speaks for the larger population until the group is identified as terrorist.