What Was the Significance of the Berlin Conference of 1887

What was the significance of the Berlin Conference of 1887?

A) Selected nations of Europe planted their flags in map areas of Africa and Asia, claiming them as their territories.
B) The nations of Europe voted to place an end to worldwide colonialism that began in the 16th century.
C) Belgium was censored by the European Union for annexing the Congo River Basin as its own territory.
D) A peace accord was signed that was intended to prevent world war.