All of the Following Developments Occurred During the First Year

All of the following developments occurred during the first year of World War I except

A) the Schlieffen Plan almost gave Germany victory in the West.
B) the Western Front became a bloody stalemate involving virtually endless trench warfare.
C) Russia badly defeated the Germans at the Battles of Tannenberg and Masurian Lakes.
D) a combined German-Austrian force dealt the Russians a nearly fatal defeat in Galicia.
E) the Serbians were defeated by a combined German-Austrian-Hungarian force.