Answer:
A. Germany had to assume full responsibility for the war
Explanation:
The "War Guilt Clause" is provided in Articles 231 of the Treaty of Versailles which was targeted at Germany. It required the whole of Germany including the governments to own up and accept that the damages caused by World War I was as a result of Germany's actions. The purpose of the clause was to convince the French and Belgians to accept that the compensation to be payed by Germany for the damages they caused be of a lesser amount.