Which of the following best explains why companies like Amazon and Wal-
Mart can sell things more cheaply than others who sell the same products?
O A. They pay lower wages because they employ so many people
O o
B. They can buy wholesale goods cheaply because they have so
many customers.
O C. They have partnerships with many other businesses.
O D. They only sell a few products so they can be as efficient as
possible​