单选题 Which of the following statements concerning Adorno's musical criticism can be inferred from the passage?

• (A) Adorno failed to account for rock 'n' roll as a musical form largely because it wasn't commercial enough.
• (B) His methodology was advanced on the whole, but failed to take into account enough categories of music to be comprehensive.
• (C) Adorno ignored non-pop music largely because he felt its cultural influence was negligible.
• (D) Adorno's greatest failure was in ignoring the music of non-capitalist societies.
• (E) Adorno's work was near-sighted largely because it focused on the primacy of radio and record, ignoring less popular means of transmitting music.