The correct option is B
The Second World War was a global military conflict that took place between 1939 and 1945. In this, most of the nations of the world were involved, in fact at the time of the fall of the Hitlerian Reich, only nine States of the world were officially neutral. (Afghanistan, Denmark, Spain, Ireland, Mongolia, Nepal, Portugal, Sweden and Switzerland), including all the great powers, grouped in two opposing military alliances: the Allies of the Second World War and the Axis Powers. It was the greatest war in history, with more than one hundred million soldiers mobilized and a state of "total war"