World War I became a war of attrition, which means that _. A)the Allies tried to defend their positions from their trenches in the hopes that the Germans would eventually run out of men and stop attacking

B)the Germans tried to wear down the Allied forces with a series of repeated, continued
attacks on a position until the Allies no longer had sufficient manpower to defend the
position

C)the Allies tried to wear down the German forces with a series of repeated, continued attacks
on a position until the Germans no longer had sufficient manpower to defend the position

D)the Germans tried to defend their positions from their trenches in the hopes that the Allies
would eventually run out of men and stop attacking