Germany restricted as a result of the Treaty of Versailles because the size of its military was severely limited. Thus the option (A) is correct.
Treaty of Versailles is the agreement and the peace document signed at by the Allied and associated powers and by Germany in the Palace of Versailles, France after the end of the World War I.
It was signed on 28 June 1919 and came into force after one year in 20 January 1920.
By limiting the size of the army to up to 100,000 troops and employing few generals, Germany was disarmed. This was done in order to never allow Germany to threat the European countries with the military powers.
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