Why Is It Difficult to Make a Threat of Attack

Multiple Choice

Why is it difficult to make a threat of attack seem credible to an opponent?

A) States are rarely capable of actually attacking other countries.
B) An opponent can often tell when the threatening state is bluffing.
C) Opponents have access to enough information about the other state to discredit its threats.
D) The threat of such a war can seem too costly to be a reasonable option.