Announcer: "The Wilson Vacuum Is the Best Vacuum of Any

Announcer: "The Wilson vacuum is the best vacuum of any on the market today. It is quiet, light to carry, and works on hardwood floors, tile, or carpet. We asked 100 people to try the Wilson in our showroom and 99 of them told us the floors and carpets looked cleaner than their own. There is no better value on the market today for consumers wanting a clean home, and you will be 100% satisfied with your new Wilson."
The announcer's reasoning is most vulnerable to criticism on the grounds that it fails to consider whether:

A) The consumers tested were aware of the price of the vacuum.
B) The Wilson vacuum costs more than most other vacuums.
C) The consumers tested were able to compare it to another vacuum.
D) Any of the consumers had the opportunity to ask questions about the vacuum.
E) The consumers knew that they were using a Wilson vacuum.