Which of the following was NOT a true cause of the fall of Czar Nicholas II during the A: Russian Revolution? The killing of unarmed protestors outside the Czar's winter palace.

B: Czar Nicholas Il's cooperation and willingnes to work with the Bolshevik Party

C: Czar Nicholas II's disastrous handling of World War I.

D: The rising of revolutionary movements that believed a worker-run government should replace czarist rule