Which statement best assesses how Russia's withdrawal affected the Central powers during World War I? (1 point,

A. • Russia's withdrawal gave the Allies Russia's coal, iron, and oil industry.
B. • Russia's withdrawal strengthened the Allies' military, which caused the Central powers to lose World War I.
C. • Russia's withdrawal was a huge territorial success for the Allies.
D. • Russia's withdrawal was a significant loss for the Central powers, as they lost a key player against the Allies.

D. • Russia's withdrawal was a significant loss for the Central powers, as they lost a key player against the Allies.