Which of the following, if true, most strengthens the prediction that Donut
Chain's promotion will increase the new store's profitability?
(A) Donut Chain has a loyal following in much of the country.
(B) Donut Chain has found that the vast majority of new visitors to its stores
become regular customers.
(C) Donuts at Donut Chain cost less than a cup of coffee.
(D) Most of the copies of the coupon in the local newspaper will not be
redeemed for free donuts.
(E) Donut Chain's stores are generally very profitable.

Why cant D strengthen?
Say people read the promotion, go to store but dont redeem the coupons. they might have forgotten to get the coupons. but they buy other stuffs. .. say many many guys do this.. profit ll go up as donuts wont go for free and poeple would have bought items.. doesnt this strengthen?????????????

OA is B. Agreed but why cant D strengthen..pls see my argument above!