The correct option is D Limiting the army to 15,000 men.
The Treaty of Versailles was one-sided. It held Germany responsible for starting the war and imposed harsh penalties on it. It made the Germans pay a heavy war indemnity of 33 billion dollars, supply coal to Italy, Belgium, and France for ten years and restrict the army to 15,000 men while altogether banning the air force. Germany also had to make substantial territorial concessions.