What Are Two Major Facets of the Relationship Between Books

What are two major facets of the relationship between books and television?

A) The ability of book authors to become TV stars and TV stars to write books
B) That TV can help sell books and that books serve as ideas for TV shows
C) That books need to be advertised on television and TV shows need to be talked about in books in order for either industry to be profitable
D) That television shows often give authors ideas for books but books are never a source of inspiration for TV shows
E) None of the options are correct.