What Are the Aims of Terrorists Via Their Calculated Acts

What are the aims of terrorists via their calculated acts of terrorism?

A) To panic their enemies, to gain publicity and recruits, and to get the foe to overreact and drive more people to side with the terrorists
B) To destroy as much of the economic strength of a nation as possible
C) To kill national leaders
D) To kill their enemies, to gain recruits, and to get the UN to overreact and cause more people to side with the terrorists