Which of the Following Does NOT Describe an End-Cap

Which of the following does NOT describe an end-cap?

A) They are display located at the end of an aisle.
B) They have high visibility.
C) Product sales increase dramatically when merchandise is featured on an end-cap.
D) Retailers use end caps to merchandise seasonal,temporary,or promotional items as well as high-margin items.
E) They are most often used with a free-form layout.