Which of the Following Is True of Vending Machines

Which of the following is true of vending machines?

A) Vending machine sales now account for almost 20 percent of consumer spending.
B) Vending machine retailing requires a lower margin to cover costs than for comparable products sold in stores.
C) Vending machine retailing has been declining.
D) Vending machine sales now include higher-margin products like bathing suits.
E) None of these answers is correct.