The correct answer is "held Germany (and Austria) responsible for the war and required reparations."
Germany was especially opposed to Article 231 of the Treaty of Versailles because it held Germany (and Austria) responsible for the war and required reparations.
Under the Treaty of Versailles, the allies laid responsibility for The First World War on Germany. It dictated that Germany would pay reparations and disarm its military. It·resulted in a substantial loss of territory for Germany. ·it helped set the stage for European conflict that would eventually result in World War II.
The Treaty of Versailles was signed on June 28, 1919, and the signing represented the official end of World War II. It was signed in the Palace of Versailles, close to Paris, France.