I believe the answer is A. Correct me if i'm wrong :)
Harry S Truman The Buck Stops Here means I'm the ultimately responsible person in this organization. Other people can pass the buck to me, but I can't pass the buck to anyone else.
It allowed the independent Soviet nations and satelite states to choose democracy over communism
They attacked enemy ships, passenger ships, and trade ships. Basically any ship they saw, they attacked it.