Which event best replaces the question mark in this sequence?
Russia 1917-1918
• Czar Nicholas II abdicated Russian Imperial throne
• ?
• Bolsheviks seized power and became the Communist Party
• Russia signed a peace treaty with the Central Powers
A. Vladimir Lenin returned to lead the Russian Revolution
B. Leon Trotsky escaped Russia for exile in Mexico
C. The Russian government adopted the New Economic Policy
D. The Red Army won the Russian Civil War