Which of the following are characteristics of musical impressionism?
A. Harshly dissonant chords, percussive effects, strong rhythmic drive
B. Huge masses of sound, turbulent and dramatic melodies, rejection of "prettiness"
C. Musical elements chosen by random methods and produced by electronic means
D. Vague tonality (chords used for color, not function), vague sense of beat (the music "floats")