How did appeasement lead up to World War Two? Please give me answer quickly

A. It will lead to greater Soviet resolve to oppose German expansion and ultimately to war, despite being meant to satisfy Germany’s desire for more territory

B. It allowed Germany to expand its territory and checked until it became a direct threat, making it war avoidable.

C. It allowed the German army access to the Low countries of Belgium and Luxembourg, leading the French to declare war on Germany for its aggression.

D. It created a false sense of security among Americans that they could avoid in Europe by giving Germany territory that it demanded.