How Did Avant-Garde Artists Demonstrate Their Opinion of and Attitude

How did avant-garde artists demonstrate their opinion of and attitude toward middle-class mores and taste, in keeping with their watchword, épater la bourgeoisie?

A) They presented art that was primarily sentimental in nature.
B) They produced art that was seen as morally questionable or alien and bizarre.
C) They mostly depicted human rather than animal or inanimate subjects.
D) They sought to keep their art consistent with the literature that most appealed to the middle class audiences.
E) They emphasized the rational over the irrational in their art.