The correct option is A The Treaty of Versailles
On 28 June 1919, The Great War( World War 1) came to an end , with signing of Treaty of Versailles, the treaty was signed in Hall of Mirrors , Versailles, France. This treaty was signed by Germany and many restrictions were held by the Triple Entente , on Germany's military and geography,and massive amount was to be paid, by Germany to the Triple Entente , this treaty is considered as a humiliation by the Germans and the injustice done to Germany , in this treaty is said to be one of the reasons of world war 2.