How Did the Short Eight-Month Participation of American Soldiers in Battle

How did the short eight-month participation of American soldiers in battle impact the outcome of World War I?

A) It shifted the balance of power to the Allies and prevented a prolonged stalemate.
B) It had little impact on the war's outcome and caused it to drag out longer than initially expected.
C) It forced the Bolsheviks to withdraw the Russian army and to conclude a separate peace treaty with Germany.
D) It led to the immediate retreat of German military forces from French territory.