Although recently introduced with a wave of
publicity, combined audio/video receivers are
proving tough to sell. As a result, the
manufacturers keep advertising, and offering
handsome discounts. What the manufacturers
have yet to see is that the public's reluctance
isn't due to the price of the product; the public is
still debating the even more fundamental
question of --------.
Which of the following best completes the
passage above?
(A) whether the product is worth its price
(B) whether there is a use for such a product
(C) whether the models will soon become
obsolete
(D) whether the uses for such a product
outweigh its high cost
(E) whether more stylish models will appear in
the future

How to decide between B , C and E ?
C and E are valid too