In the 1920s, how did the cubist movement reflect the influence of world war i?

a. its fuzzy shapes reflected the breakdown of traditional categories in describing the war.
b. its disjointed and distorted objects reflected some people's experience of battle.
c. its curvy brushstrokes showed the experience of the fast-changing post-war world
d. its almost exclusive use of red and yellow represented the wounds and destruction caused by war.

(some people are brainless and don't leave the multiple choice answers! : ( )