B.
is the right answer because the sentence contains a misplaced modifier to the band played songs for the crowd with guitars.
good luck
what is wrong with your question all the sentences are exactly the same.
I feel like agree with (B) much more because in the question it states that the quote has to show the "cultural complexity" of the genre meaning that its not as static as it was before as mentioned in question A. , but how it evolved over-time thus becoming more complex : branching out into different ideas of race and class .