Critical Reasoning

Singing in the Rain Umbrella Corp. plans to institute a marketing campaign in
which it sells umbrellas at the exits of subway stations during rainy weather. The
umbrellas will be sold at a price that is slightly higher than normal. The company
thinks the sales of these higher - priced umbrellas will be greater than normal
sales of umbrellas, because the purchasers of these umbrellas will be forced to
buy them if they do not want to get wet.

The author assumes which of the following about the purchasers of the umbrellas
in predicting the sales of the umbrellas?

A. Customers who do not feel immediate pressure to purchase will
not do so.
B. Normally priced umbrellas are not profitable for singing in the
Rain Umbrellas Corp.
C. Very few people buy Singing in the Rain's normally priced
umbrellas.
D. Singing in the Rain Umbrellas Corp. will have to stop selling
normally priced umbrellas when it starts selling higher priced
umbrellas.
E. Most potential customers of Singing in the Rain's higher priced
umbrellas will not have acquired an umbrella previously.


I m confused B/w a nd E


my query is if the stem has two "do not" whhich one has to take for negation test

for example in stem A



A. Customers who do not feel immediate pressure to purchase will
not do so.

negate A: Customers who do feel immediate pressure to purchase will
not do so.
for sure conclusion falls and wins to be OA

Negate A: Customers who do not feel immediate pressure to purchase will
do so.
rather sales increasing , may not be even contender for OA

how would negation test work with this stem while either way of negation giving different notions

[/spoiler]OA A[spoiler][/spoiler]