How does the author's comparison of Bob Dylan to other folk icons convey how folk musicians were changing?
OA. It shows that even folk's biggest names could never be as great as rock musicians.
OB. It shows that even folk's biggest names could be lured to other forms of music.
OC. It shows that rock and roll was never going to become bigger than folk.
OD. It shows that rock and roll was the more politically charged art form of the time.