What Was Otto Von Bismarck's Greatest Objective

What was Otto von Bismarck's greatest objective?

A) To become part of a country that would consist of Austria, Germany, and Hungary.
B) To see Kaiser Wilhelm I, whom he despised, removed as leader of Germany.
C) To create a German state that would exclude the Austrians but would take most of their territory.
D) To provoke Austria into going to war against the Germans.
E) To unify all of the Germans under one government, headquartered in Berlin.