The Next Few Decades Are Likely to Be Critical for Evaluating

The next few decades are likely to be critical for evaluating democratic peace theory because

A) we now have many more opportunities for democracies to fight one another.
B) people are now paying closer attention to the issue.
C) Immanuel Kant predicted democratic peace would exist within 200 years of when he wrote.
D) the potential costs of war are now so great.