Regarding Automatic Vending, Which of the Following Statements Is TRUE

Regarding automatic vending, which of the following statements is TRUE?

A) It is important for soft drinks, candy bars, and snack foods.
B) Costs are relatively high because the machines are expensive to stock and repair.
C) Although its growth has been spectacular, automatic vending still accounts for less than 2 percent of total U.S. retail sales.
D) A major advantage is customer convenience.
E) All of the above are true.