Contemplated between (C), (D), and (E). Ultimately chose (D) on my first try and chose E on my second try.
I was thrown into the dilemma of not knowing which answer choice to pick because of the word minstrel which I didn't know. Turns out that minstrel is a generally medieval concept of musicians, and so it would be neither folk dramas or urban realistic dramas. However, I was able to pick (E) on my second try even without looking up the word, and that was because The Swing Mikado was adapted from a white classic and hired(casted) African American performers.
(A) and (B) are rejected by 'ironic adaptation' and 'challenged the audience to think'.