Which of the Following Is a Reason Why Historians Have

Which of the following is a reason why historians have described World War II as a total global conflict?

A) World War II led to significant transformations of all the major prewar forms of government.
B) Fighting in World War II took place on three continents and included soldiers from all continents except Antarctica.
C) All countries in the world were involved in the war, suffering severe financial losses and dislocation to their economies.
D) Class, race, and gender boundaries were dissolved by the needs of total war in all the combating nations.