Select the letter of the correct answer. Based on the Article, which best replaces the question mark in the diagram above?

There is a box on the left that is labeled "Cause." The text in the box says "A new movement has researchers and historians studying hip-hop." There are arrows pointing to two boxes on the right. The boxes are labeled "Effects." The top box says "UMass worked with the Boston Public Library to create a hip-hop archive." The bottom box has a question mark in it.
Press enter to interact with the item, and press tab button or down arrow until reaching the Submit button once the item is selectedAMany Boston artists aren't well known enough to be studied as part of hip-hop history.
BUMass researchers in Boston are looking for musicians to create a totally new sound.
CA growing number of universities in the U. S. are approaching hip-hop as a scholarly subject.
DNasir Jones is interested in recreating the music from 1980s hip-hop demo tapes.