Book publishing executive: I am becoming increasingly convinced that

Book publishing executive: I am becoming increasingly convinced that the interaction between book sales and literary quality is not a simple one. For example, I now believe that no number one best seller will win the major literary prizes. But I also believe that all major literary prize winners will have unusually high long-term sales.

If the beliefs that the book publishing executive claims to hold are true, which of the following must also be true on the basis of them?

A. No books with unusually high long-term sales are number one best sellers.
B. At least some number one best sellers are not books with unusually high long-term sales.
C. All books with unusually high long-term sales are number one best sellers.
D. At least some books with unusually high long-term sales are not number one best sellers.
E. No number one best sellers have unusually high long-term sales.