59. According to the reading, which of the following benefits that vending machines provide is not true?
(A) Their service helps lower some barriers to the sale, especially for housewives.
(B) In student cafeterias, they sell drinks, candy, and warm food.
(C) The goods of vending machines can be both bought and sold anonymously.
(D) Businesses save on labor costs, while customers save on hassle and inconvenience.