German Offensives in Scandinavia and Western Europe in 1940 Relied

German offensives in Scandinavia and Western Europe in 1940 relied on a style of fighting known as blitzkrieg.What characterized this strategy?

A) drawn-out series of massive battles within major population centers
B) short, fast, and powerful attacks intended to overwhelm the enemy
C) siege-type warfare meant to starve the enemy into submission
D) alliances with internal enemies, resulting in civil unrest and weakened central governments
E) covert operations made by small units using mostly machine guns