Critical Reasoning

Each year Americans buy a record number of new books from retail bookstores and online stores, Despite these robust books sales, the average American reads fewer books each year.

Each of the following, if true, could explain the simultaneous increase in book sales and decrease in the number of books Americans read EXCEPT:

(A) During this year, the number of non-fiction books that Americans read increased faster than number of novels read decreased.

(B) The number of books borrowed from public libraries decreased by 30% in the last 10 years. (this indicates increase in book sales and a drop in reading from library books)

(C) Historically Americans have read more than two-thirds of the books they purchased, but recently that number has dropped to less than forty percent (explain simultaneous increase and drop)

(D) Today more Americans have their own personal libraries, and therefore choose to purchase books rather than borrow from their friends. (this tells increase in sales of books but doesn't tell decrease in reading, so how does this explain the paradox)

(E) More books are available at a discount today, from bargain book sellers and online stores, than were at any time in the past. (again it tells increase in sales of books, but nowhere indicates drop in reading)

We have to find an answer that explains simultaneous increase in book sales and decrease in the number of books Americans read.

I don't see D and E help resolve the paradox. On what basis I can reject these 2 choices.

Thanks
Vinni